Marcus Materials Co.

About

What we do

Marcus Materials Co. offers engineered ceramic components to Industry and Military Suppliers Worldwide as either a direct supplier or consulting to meet your needs.

We specialize in silicon carbide and boron carbide ceramics for use in armor, semiconductor equipment, high-temperature (refractory), and wear resistance applications. We have strong technical and commercial experience with armor composites. Check out the materials that we offer, the applications we support, and our consulting activities.

Our goal

We strive to make it easy for you to work with us via effective and timely communication, with no bureaucracy nor waiting.

And the more mundane information

• Marcus Materials Co. is a C-Corporation registered in the State of Delaware in the United States of America.
• We have been in business since 1991.
• We are registered with a DUNS number, a US Government CAGE Code, and a valid SAM.gov registration eligible to accept contracts from the US government as a small business.
• Employer Identification Number (EIN), Corporate Tax ID Number is available upon request.

Materials

Engineered ceramic materials

• Aluminum Oxide (alumina, Al2O3)
• Boron Carbide (B4C), hot-pressed and reaction bonded
• Magnesium Aluminate Spinel (MgAl2O4), transparent ceramic
• Silicon Carbide (SiC), pressureless sintered and reaction bonded
• Silicon Nitride (Si3N4), pressureless sintered

Composite materials, Armor systems

• Carbon fiber / epoxy reinforcement of ceramics
• Fiberglass / epoxy reinforcement of ceramics
• Bonding of ceramic and ultrahigh molecular weight polyethylene for armor
• Aramid (Kevlar and Twaron) composites
• Transparent laminates using spinel, sapphire, AlON, glass, polycarbonate, polyurethane, and EVA

Applications

The materials that we supply are used primarily in the following applications:

• Armor
• Ballistic impact resistance
• Mining
• Pulp and paper
• Wear resistance
• High temperature applications
• Thermal management
• Nuclear power
• Corona discharge tubes

Armor

Supply and consulting of opaque and transparent armor-grade ceramics, laminates, and systems

We specialize in armor including the ceramics used as strikefaces in armor systems and the laminates that define the armor system.

We can help you choose a ceramic for a particular threat or armor specification. We can design composite laminates for you to meet a particular specification be it NIJ, STANAG, or US DoD. We can build prototype targets for you and ballistically test them.

There are not that many truly independent armor development shops. Marcus Materials Co. can support your development, prototype, testing needs, and production support needs without being a competitor. Where else can you find that kind of support?

Throw it at us - we are likely familiar with what you need to do.

Consulting

We consult on the use of engineered ceramics (application engineering), component design, supply chain, and armor composites.

Ceramic application support

Are you having difficulty determining the best engineered ceramic to use for your application, or understand the differences between the many flavors of engineered ceramics? Are you paying for hot-pressed material when reaction bonded may work as well at a much lower cost, for example? Are you having trouble with an existing supplier or have had a supply chain disruption? We have been doing this for a long time and know our way around engineered ceramic materials and the ceramic industry. We do our best to advise our customers on the best material for the job, even if that means recommending a material that we do not supply. To that end, we regularly consult to assist in material selection, test/evaluation of engineered ceramic materials, and supply-chain issues.

Armor composites support

We have been involved with armor composites since 1987. Most composites we work with include a ceramic component. We can laminate targets for you, design laminates for specific threats, multihit, or other program-specific requirements, and ballistically test targets. The composites we focus on incorporate ceramic strikefaces to defeat threats including 5.56mm, 7.62 AP, up to 14.5mm.

We work hard to make it easy for you to work with us. You will experience effective and timely communication with no bureaucracy nor waiting. Give us a call to discuss your needs.

Privacy Policy

Marcus Materials Co. respects your privacy rights. Any information sent to us via this website will be kept strictly confidential and will only be used to respond to your inquiry to us. Marcus Materials Co. will not distribute, sell, rent, loan, trade, or lease the information you have submitted to us to any third party. We will use care in protecting the privacy and security of your information.

We request that you do not send any sensitive or proprietary information to us without prior accommodations so that we can setup proper archival and working boundaries around the information for your protection.

Marcus Materials Co. cannot be responsible for any unsolicited sensitive or proprietary information sent to us via this website.

Information shared outside of the inquiry submission mechanism on this website is not covered under this Privacy Statement. Such information may be covered under separate Non-Disclosure Agreement if mutually deemed necessary. A copy of Marcus Materials Co. standard Mutual Non-Disclosure Agreement can be found under the Downloads section of this website.

Any questions or comments pertaining to this privacy statement should be directed to the primary commercial contact listed on the Contact Us section of this website.

Guiding Principles

Each member of the Marcus Materials Co. team shall promote and preserve the ideals of fairness, honor, integrity, and respect in all dealings. Equity and balance is to be achieved and maintained in all relationships. We shall encourage cooperation and recognize that cooperation is sometimes hidden behind competition, ego, and emotion. We shall stay clear of inward focus. We shall be both diligent and patient in our endeavors. We shall not take advantage of people or situations nor unfairly or unduly capitalize at the expense of others. We shall not expect nor accept any more or less than what has been earned and is deserved. We shall coexist in harmony with nature, our environment, and society. We believe that our customers and suppliers expect quality service and quality product and it is our duty to deliver both.

The Marcus Materials Co. team believes that when profit becomes our primary focus our Guiding Principles will have been compromised. We believe that long-term relationships and profits will be realized as a result of our internalizing and practicing our Guiding Principles.

Frequently Asked Questions

QUESTION: Does Marcus Materials Co. supply ceramic powder or raw materials?
ANSWER: No. We only supply components made from those materials listed under the “Materials” section.

QUESTION: Does Marcus Materials Co. supply any parts from stock?
ANSWER: We do stock some standard sizes of flat tiles and curved body armor tiles in SiC and B4C; however, most components we supply are made to customer specifications. We usually maintain a variety of thicknesses of body armor tiles for customer testing and development.

QUESTION: Does Marcus Materials Co. accept credit cards?
ANSWER: We do not directly accept credit cards; however, we can accept credit card payments via PayPal.com. Please contact us for more information about making a payment using PayPal.com.

Tools

Conversion of Units commonly used in armor calculations

Calculate the weight of a hexagonal tile

Calculate the weight and areal density of a rectangular or square tile.

Show list of densities (g/cc) of many materials.

Hex tile calculations

F = Dimension from flat-to-flat
S = length of side = ((F/2)/0.866)
Area = 2.598*S*S

Imperial Units (except for density)

(calculations are run when you leave the $/lb fields)

Metric Units

(calculations are run when you leave the $/kg field)

Armor Unit Conversions

    1 kg/m²     = 0.2045 pounds/ft²
    1 pound/ft² = 4.8824 kg/m²
    pound/ft²   = psf
    5.1 psf     = 25 kg/m²
    7.1 psf     = 34.7 kg/m²
    
    Areal densities of various materials:
    7mm of SA-SiC:  4.52 psf (22.1 kg/m²)
    8mm of SA-SiC:  5.16 psf (25.2 kg/m²)
    12mm of SA-SiC: 7.74 psf (37.8 kg/m²)
    0.020" (0.5mm) of CP-Ti:  0.46 psf (2.3 kg per m²)

    Specific Gravity
    1 gram per cc = 62.428 pounds/ft³
    1 pound/ft³   = 0.01602 gram per cc
    
    Specific Gravity of various materials
    Boron Carbide:  2.48 g/cc - 2.5 g/cc
    RB-SiC:         3.00 g/cc - 3.08 g/cc
    Sintered SiC:   3.13 g/cc - 3.20 g/cc
    Aluminum Oxide: 3.85 g/cc
    Titanium:       4.5 g/cc

    Length
    1 meter = 3.28 feet
    1 foot  = 0.3048 meter
    1 inch  = 2.54 cm

    Velocity
    1 foot per second  = 0.3048 meters per second
    1 meter per second = 3.28 feet per second
    
    2850 feet per second = 868 meters per second
    3100 feet per second = 944 meters per second

    Weight
    1 kg    = 2.2050 pounds
    1 pound = 0.454 kg
    1 grain = 0.0648 grams for projectile weights

Volume
1 cc  = 0.06102376 in³
1 in³ = 16.38706 cc
1 in³ = 5.78704E-04 ft³
1 ft³ = 1728 in³
1 ft³ = 28316.85 cc
1 ft³ = 0.02831685 m³

Hex Tile Calculations:
R    = from center to flat edge
S    = length of side
R    = 0.866*S
2R   = Flat-to-Flat
Area = 3.464*R*R
Area = 2.598*S*S

Calculate Weight of tile

Densities of materials

The data below is the same as above but in
ASCII format in-case you want to copy it.

Densities sorted by Material Category
Category    Material               Density (g/cc)
--------    ---------------        --------------
Ceramic     Alanx CG896                 3.32
Ceramic     Alumina                     3.9
Ceramic     Alumina, 85%                3.41
Ceramic     Alumina, 90%                3.6
Ceramic     Alumina, 94%                3.7
Ceramic     Alumina, 96%                3.75
Ceramic     Alumina, 99%                3.9
Ceramic     Alumina, 99.5%              3.89
Ceramic     Alumina, 99.9%              3.96
Ceramic     Aluminosilicate             2.6
Ceramic     Aluminum Nitride            3.25
Ceramic     BeO                         2.85
Ceramic     Boron Carbide               2.5
Ceramic     Borosilicate Glass          2.3
Ceramic     Glass                       2.6
Ceramic     Graphite                    2.163
Ceramic     Hafnium Carbide            12.76
Ceramic     Iron Slag                   2.755
Ceramic     Lead Glass                  2.8
Ceramic     Mg-PSZ                      5.75
Ceramic     Mullite                     2.82
Ceramic     Nitride-Bonded SiC          2.54
Ceramic     PSZ                         5.75
Ceramic     Quartz Glass                2.2
Ceramic     RB-SiC                      3.09
Ceramic     Refrax                      2.54
Ceramic     SNBSN / "Refrax"            2.54
Ceramic     Sapphire                    3.99
Ceramic     SiAlON                      3.3
Ceramic     Silicon Nitride             3.28
Ceramic     Silicon carbide             3.2
Ceramic     Sintered SiC                3.1
Ceramic     TiC                         4.94
Ceramic     Tungsten Carbide           15.7
Ceramic     Vanadium Carbide            5.71
Ceramic     WC / Tungsten Carbide      15.7
Ceramic     Y-TZP                       6.1
Ceramic     ZTA                         4.1
Ceramic     Zirconia                    5.75
Ceramic     Zirconium Carbide           6.56
Chemical    Benzene                     0.737
Chemical    Gasoline                    0.721
Composite   Carbon-Carbon Composite     1.65
Liquid      Ethyl Alcohol               0.802
Liquid      Methyl Alcohol              0.809
Liquid      Mineral Oil                 0.914
Liquid      Seawater                    1.025
Liquid      Vegetable Oil               0.93
Liquid      Water, 100 °C               0.9581
Liquid      Water, 4 °C                 0.99997
Liquid      Water, Ice                  0.897
Liquid      Water, Seawater             1.025
Metal       Aluminum                    2.643
Metal       Aluminum bronze             7.702
Metal       Aluminum, 2024-T3           2.77
Metal       Aluminum, 6061-T6           2.7
Metal       Aluminum, 7079-T6           2.74
Metal       Beryllium                   1.8477
Metal       Beryllium, QMV              1.85
Metal       Brass                       8.553
Metal       Bronze, aluminum            7.702
Metal       Bronze, phosphor            8.8
Metal       Bronze, ~11% Tin            8.1
Metal       Carbon Steel                7.84
Metal       Carbon Tool Steel           7.82
Metal       Cobalt                      8.8
Metal       Copper, Pure                8.9
Metal       Copper, cast-rolled         8.906
Metal       German Silver               8.586
Metal       Gold Coin (US)             17.19
Metal       Gold, Pure                 19.32
Metal       Gold, cast-hammered        19.3
Metal       High Speed Tool Steel       8.75
Metal       Iridium                    22.16
Metal       Iron, Cast, Pig             7.207
Metal       Iron, Ferrosilicon          6.984
Metal       Iron, Spiegeleisen          7.496
Metal       Iron, grey cast             7.079
Metal       Iron, wrought               7.658
Metal       Lead                       11.37
Metal       Magnesium, Pure             1.7
Metal       Manganese                   7.608
Metal       Mercury                    13.57
Metal       Molybdenum, wrought        10.3
Metal       Monel Metal, rolled         8.688
Metal       Nickel                      8.602
Metal       Nickel, Pure                8.9
Metal       Pig Iron                    7.207
Metal       Platinum                   21.3
Metal       Plutonium, alpha phase     19.35
Metal       Pure Iron                   7.86
Metal       Silver, Cast-hammered      10.51
Metal       Silver, Pure               10.5
Metal       Soft Steel (0.06% C)        7.87
Metal       Stainless 18Cr-8Ni          8.03
Metal       Stainless 27Cr              7.47
Metal       Stainless Steel, 304        8.03
Metal       Steel, C1020, HR            7.85
Metal       Steel, cold-drawn           7.83
Metal       Steel, tool                 7.715
Metal       Tantalum                   16.6
Metal       Thorium, Ind. melted       11.6
Metal       Tin, cast-hammered          7.352
Metal       Titanium                    4.5
Metal       Titanium, B 120VCA          4.85
Metal       Tungsten                   18.82
Metal       Uranium                    18.74
Metal       Uranium D38                18.97
Metal       Wrought Iron                7.75
Metal       Zinc, Cast                  7.049
Metal       Zirconium                   6.3798
Mineral     Coal, Anthracite            1.554
Mineral     Coal, Bituminous            1.346
Mineral     Coal, Coke                  1.201
Mineral     Coal, Lignite               1.25
Mineral     Copper Ore, pyrites         4.197
Mineral     Corundum-Crystal Form       3.99
Mineral     Iron Ore, Hematite          5.206
Mineral     Iron Ore, Limonite          3.796
Mineral     Iron Ore, Magnetite         5.046
Mineral     Lead Ore, Galena            7.449
Mineral     Manganese Ore               4.149
Mineral     Pyrolusite, Mn Ore          4.149
Mineral     Tin Ore, cassiterite        6.695
Mineral     Zinc Ore, blende            4.052
Other       Ice                         0.897
Other       Leather, common             0.945
Other       Paper                       0.929
Other       Paraffin                    0.898
Plastic     HDPE                        0.955
Plastic     Kevlar 149                  1.47
Plastic     Kevlar 29                   1.44
Plastic     Kevlar 49                   1.44
Plastic     Polyurethane                1
Plastic     Rubber                      1.506
Wood        Birch                       0.705
Wood        Cherry                      0.433
Wood        Mahogony                    0.705
Wood        Red Oak                     0.673
Wood        Southern Pine               0.65
Wood        Sugar Maple                 0.689
Wood        Walnut                      0.593


Densities sorted by Material Density
Category    Material               Density (g/cc)
--------    ---------------        --------------
Wood         Cherry                     0.433
Wood         Walnut                     0.593
Wood         Southern Pine              0.65
Wood         Red Oak                    0.673
Wood         Sugar Maple                0.689
Wood         Birch                      0.705
Wood         Mahogony                   0.705
Chemical     Gasoline                   0.721
Chemical     Benzene                    0.737
Liquid       Ethyl Alcohol              0.802
Liquid       Methyl Alcohol             0.809
Other        Ice                        0.897
Liquid       Water, Ice                 0.897
Other        Paraffin                   0.898
Liquid       Mineral Oil                0.914
Other        Paper                      0.929
Liquid       Vegetable Oil              0.93
Other        Leather, common            0.945
Plastic      HDPE                       0.955
Liquid       Water, 100 °C              0.9581
Liquid       Water, 4 °C                0.99997
Plastic      Polyurethane               1
Liquid       Seawater                   1.025
Liquid       Water, Seawater            1.025
Mineral      Coal, Coke                 1.201
Mineral      Coal, Lignite              1.25
Mineral      Coal, Bituminous           1.346
Plastic      Kevlar 29                  1.44
Plastic      Kevlar 49                  1.44
Plastic      Kevlar 149                 1.47
Plastic      Rubber                     1.506
Mineral      Coal, Anthracite           1.554
Composite    Carbon-Carbon Composite    1.65
Metal        Magnesium, Pure            1.7
Metal        Beryllium                  1.8477
Metal        Beryllium, QMV             1.85
Ceramic      Graphite                   2.163
Ceramic      Quartz Glass               2.2
Ceramic      Borosilicate Glass         2.3
Ceramic      Boron Carbide              2.5
Ceramic      Nitride-Bonded SiC         2.54
Ceramic      Refrax                     2.54
Ceramic      SNBSN / "Refrax"           2.54
Ceramic      Aluminosilicate            2.6
Ceramic      Glass                      2.6
Metal        Aluminum                   2.643
Metal        Aluminum, 6061-T6          2.7
Metal        Aluminum, 7079-T6          2.74
Ceramic      Iron Slag                  2.755
Metal        Aluminum, 2024-T3          2.77
Ceramic      Lead Glass                 2.8
Ceramic      Mullite                    2.82
Ceramic      BeO                        2.85
Ceramic      RB-SiC                     3.09
Ceramic      Sintered SiC               3.1
Ceramic      Silicon carbide            3.2
Ceramic      Aluminum Nitride           3.25
Ceramic      Silicon Nitride            3.28
Ceramic      SiAlON                     3.3
Ceramic      Alanx CG896                3.32
Ceramic      Alumina, 85%               3.41
Ceramic      Alumina, 90%               3.6
Ceramic      Alumina, 94%               3.7
Ceramic      Alumina, 96%               3.75
Mineral      Iron Ore, Limonite         3.796
Ceramic      Alumina, 99.5%             3.89
Ceramic      Alumina                    3.9
Ceramic      Alumina, 99%               3.9
Ceramic      Alumina, 99.9%             3.96
Mineral      Corundum-Crystal Form      3.99
Ceramic      Sapphire                   3.99
Mineral      Zinc Ore, blende           4.052
Ceramic      ZTA                        4.1
Mineral      Manganese Ore              4.149
Mineral      Pyrolusite, Mn Ore         4.149
Mineral      Copper Ore, pyrites        4.197
Metal        Titanium                   4.5
Metal        Titanium, B 120VCA         4.85
Ceramic      TiC                        4.94
Mineral      Iron Ore, Magnetite        5.046
Mineral      Iron Ore, Hematite         5.206
Ceramic      Vanadium Carbide           5.71
Ceramic      Mg-PSZ                     5.75
Ceramic      PSZ                        5.75
Ceramic      Zirconia                   5.75
Ceramic      Y-TZP                      6.1
Metal        Zirconium                  6.3798
Ceramic      Zirconium Carbide          6.56
Mineral      Tin Ore, cassiterite       6.695
Metal        Iron, Ferrosilicon         6.984
Metal        Zinc, Cast                 7.049
Metal        Iron, grey cast            7.079
Metal        Iron, Cast, Pig            7.207
Metal        Pig Iron                   7.207
Metal        Tin, cast-hammered         7.352
Mineral      Lead Ore, Galena           7.449
Metal        Stainless 27Cr             7.47
Metal        Iron, Spiegeleisen         7.496
Metal        Manganese                  7.608
Metal        Iron, wrought              7.658
Metal        Aluminum bronze            7.702
Metal        Bronze, aluminum           7.702
Metal        Steel, tool                7.715
Metal        Wrought Iron               7.75
Metal        Carbon Tool Steel          7.82
Metal        Steel, cold-drawn          7.83
Metal        Carbon Steel               7.84
Metal        Steel, C1020, HR           7.85
Metal        Pure Iron                  7.86
Metal        Soft Steel (0.06% C)       7.87
Metal        Stainless 18Cr-8Ni         8.03
Metal        Stainless Steel, 304       8.03
Metal        Bronze, ~11% Tin           8.1
Metal        Brass                      8.553
Metal        German Silver              8.586
Metal        Nickel                     8.602
Metal        Monel Metal, rolled        8.688
Metal        High Speed Tool Steel      8.75
Metal        Bronze, phosphor           8.8
Metal        Cobalt                     8.8
Metal        Copper, Pure               8.9
Metal        Nickel, Pure               8.9
Metal        Copper, cast-rolled        8.906
Metal        Molybdenum, wrought       10.3
Metal        Silver, Pure              10.5
Metal        Silver, Cast-hammered     10.51
Metal        Lead                      11.37
Metal        Thorium, Ind. melted      11.6
Ceramic      Hafnium Carbide           12.76
Metal        Mercury                   13.57
Ceramic      Tungsten Carbide          15.7
Ceramic      WC / Tungsten Carbide     15.7
Metal        Tantalum                  16.6
Metal        Gold Coin (US)            17.19
Metal        Uranium                   18.74
Metal        Tungsten                  18.82
Metal        Uranium D38               18.97
Metal        Gold, cast-hammered       19.3
Metal        Gold, Pure                19.32
Metal        Plutonium, alpha phase    19.35
Metal        Platinum                  21.3
Metal        Iridium                   22.16
								

Contact

The following email address is not a clickable link. You'll need to type it into your email system. Sorry, you cannot copy and paste it. It will not paste correctly. This is to try to prevent bots from harvesting the email address and bombarding us with spam.

Email

moc.nullslairetaMsucraMnull@yriuqni

Phone

91null57-13null7-20null3 1+

Elements

i = 0;

while (!deck.isInOrder()) {
    print 'Iteration ' + i;
    deck.shuffle();
    i++;
}

print 'It took ' + i + ' iterations to sort the deck.';