Sumitomo General Catalog 2025-2026

Material Properties

■ Material Properties

Thermal Conductivity (W/m · °C)

Linear-Thermal Expansion Coefficient (X 10 -6 /°C)

Hardness (mHv) (GPa)

Young Modulus (GPa)

Melting Point (°C)

Material

Specific Gravity

WC TiC

Tungsten Carbide Titanium Carbide Tantalum Carbide Niobium Carbide Titanium Nitrate Aluminum Oxide Silicon Nitride Cubic Boron Nitride

15.6

21 31 18 20 20 29 25 44

690 450 280 340 260 410 310 700 970

126

5.1 7.6 6.6 6.8 9.2 8.5 3.0 4.7 3.1

2,900 3,200 3,800 3,500 2,950 2,050

4.94

17 21 17 29 29 29

TaC NbC

14.5

8.2

A

TiN

5.43 3.98 3.17 3.48 3.52

Al 2 O 3 Si 3 N 4 cBN

>1,900 (decomposes)

1,300 2,100

— —

C

Diamond

>90

Co

Cobalt Nickel

8.9 8.9

— 100 to 180

69 92 79 75 67 17

12.3 13.3

1,495 1,455

Ni

— 18 14 10

200 630 580 530 210

WC-5% Co WC-10% Co WC-20% Co

15.0 14.6 13.5

5.0 5.0 6.0

— — — —

Cemented Carbide

High Speed Steel

8.7

8

11.0

A37

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