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SAE-AISI M52 (T11352) Molybdenum High-Speed Steel

SAE-AISI M52 steel is a tool steel. M52 is the designation in both the SAE and AISI systems for this material. T11352 is the UNS number.

The properties of SAE-AISI M52 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 M52 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.

Mechanical Properties

Elastic (Young's, Tensile) Modulus

190 GPa 28 x 106 psi

Poisson's Ratio


Shear Modulus

75 GPa 11 x 106 psi

Tensile Strength: Ultimate (UTS)

710 to 2280 MPa 100 to 330 x 103 psi

Thermal Properties

Latent Heat of Fusion

260 J/g

Melting Completion (Liquidus)

1510 °C 2750 °F

Melting Onset (Solidus)

1470 °C 2670 °F

Specific Heat Capacity

460 J/kg-K 0.11 BTU/lb-°F

Thermal Conductivity

31 W/m-K 18 BTU/h-ft-°F

Thermal Expansion

13 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

8.9 % IACS

Electrical Conductivity: Equal Weight (Specific)

10 % IACS

Otherwise Unclassified Properties

Base Metal Price

12 % relative


7.9 g/cm3 500 lb/ft3

Embodied Carbon

7.5 kg CO2/kg material

Embodied Energy

110 MJ/kg 49 x 103 BTU/lb

Embodied Water

89 L/kg 11 gal/lb

Common Calculations

PREN (Pitting Resistance)


Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

24 points

Strength to Weight: Axial

25 to 80 points

Strength to Weight: Bending

22 to 49 points

Thermal Diffusivity

8.4 mm2/s

Thermal Shock Resistance

21 to 67 points

Alloy Composition

Iron (Fe)Fe 84.4 to 88.9
Molybdenum (Mo)Mo 4.0 to 4.9
Chromium (Cr)Cr 3.5 to 4.3
Vanadium (V)V 1.7 to 2.3
Tungsten (W)W 0.75 to 1.5
Carbon (C)C 0.85 to 1.0
Silicon (Si)Si 0.2 to 0.6
Manganese (Mn)Mn 0.15 to 0.45
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

All values are % weight. Ranges represent what is permitted under applicable standards.

Followup Questions

Similar Alloys

Further Reading

ASTM A600: Standard Specification for Tool Steel High Speed

Tool Steels: Properties and Performance, Rafael A. Mesquita (editor), 2016

ASM Specialty Handbook: Carbon and Alloy Steels, J. R. Davis (editor), 1996