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SAE-AISI M36 Steel vs. SAE-AISI M7 Steel

Both SAE-AISI M36 steel and SAE-AISI M7 steel are iron alloys. They have 87% of their average alloy composition in common.

For each property being compared, the top bar is SAE-AISI M36 steel and the bottom bar is SAE-AISI M7 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 78
77
Tensile Strength: Ultimate (UTS), MPa 810 to 2190
760 to 2210

Thermal Properties

Latent Heat of Fusion, J/g 260
270
Melting Completion (Liquidus), °C 1600
1560
Melting Onset (Solidus), °C 1550
1510
Specific Heat Capacity, J/kg-K 440
450
Thermal Conductivity, W/m-K 19
28
Thermal Expansion, µm/m-K 12
12

Otherwise Unclassified Properties

Base Metal Price, % relative 38
18
Density, g/cm3 8.4
8.1
Embodied Carbon, kg CO2/kg material 9.5
8.9
Embodied Energy, MJ/kg 140
130
Embodied Water, L/kg 140
100

Common Calculations

PREN (Pitting Resistance) 31
35
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 23
24
Strength to Weight: Axial, points 27 to 72
26 to 76
Strength to Weight: Bending, points 23 to 44
23 to 47
Thermal Diffusivity, mm2/s 5.1
7.8
Thermal Shock Resistance, points 25 to 68
24 to 69

Alloy Composition

Carbon (C), % 0.8 to 0.9
1.0 to 1.1
Chromium (Cr), % 3.8 to 4.5
3.5 to 4.0
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0 to 0.25
Iron (Fe), % 70.1 to 75.5
79.8 to 83.8
Manganese (Mn), % 0.15 to 0.4
0.15 to 0.4
Molybdenum (Mo), % 4.6 to 5.5
8.2 to 9.2
Nickel (Ni), % 0 to 0.3
0 to 0.3
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0.2 to 0.45
0.2 to 0.55
Sulfur (S), % 0 to 0.030
0 to 0.030
Tungsten (W), % 5.5 to 6.5
1.4 to 2.1
Vanadium (V), % 1.8 to 2.3
1.8 to 2.3

Comparable Variants