SAE-AISI M62 (T11362) Molybdenum High-Speed Steel

SAE-AISI M62 steel is a tool steel. M62 is the designation in both the SAE and AISI systems for this material. T11362 is the UNS number. It can have the highest tensile strength among the tool steels in the database.

The properties of SAE-AISI M62 steel include two common variations. This page shows summary ranges across both of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare SAE-AISI M62 steel to: tool steels (top), all iron alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

Annealed M62 Tool Steel Hardened M62 Tool Steel

Mechanical Properties

Elastic (Young's, Tensile) Modulus

200 GPa 30 x 10⁶ psi

Poisson's Ratio

0.29

Shear Modulus

79 GPa 11 x 10⁶ psi

Tensile Strength: Ultimate (UTS)

830 to 2440 MPa 120 to 350 x 10³ psi

Thermal Properties

Latent Heat of Fusion

260 J/g

Melting Completion (Liquidus)

1650 °C 3010 °F

Melting Onset (Solidus)

1600 °C 2920 °F

Specific Heat Capacity

430 J/kg-K 0.1 BTU/lb-°F

Thermal Expansion

12 µm/m-K

Otherwise Unclassified Properties

Base Metal Price

30 % relative

Density

8.5 g/cm³ 530 lb/ft³

Embodied Carbon

10 kg CO₂/kg material

Embodied Energy

150 MJ/kg 64 x 10³ BTU/lb

Embodied Water

110 L/kg 13 gal/lb

Common Calculations

PREN (Pitting Resistance)

Stiffness to Weight: Axial

13 points

Stiffness to Weight: Bending

23 points

Strength to Weight: Axial

27 to 80 points

Strength to Weight: Bending

23 to 47 points

Thermal Shock Resistance

24 to 71 points

Alloy Composition

Iron (Fe)Fe		73.6 to 77.4
Molybdenum (Mo)Mo		10 to 11
Tungsten (W)W		5.8 to 6.5
Chromium (Cr)Cr		3.5 to 4.0
Vanadium (V)V		1.8 to 2.1
Carbon (C)C		1.3 to 1.4
Manganese (Mn)Mn		0.15 to 0.4
Silicon (Si)Si		0.15 to 0.4
Nickel (Ni)Ni		0 to 0.3
Copper (Cu)Cu		0 to 0.25
Phosphorus (P)P		0 to 0.030
Sulfur (S)S		0 to 0.030