MakeItFrom.com
Menu (ESC)

SAE-AISI M7 Steel vs. ASTM Grade HK Steel

Both SAE-AISI M7 steel and ASTM grade HK steel are iron alloys. They have 57% of their average alloy composition in common. There are 22 material properties with values for both materials. Properties with values for just one material (10, in this case) are not shown.

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

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.29
0.27
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 760 to 2210
500

Thermal Properties

Latent Heat of Fusion, J/g 270
310
Melting Completion (Liquidus), °C 1560
1400
Melting Onset (Solidus), °C 1510
1350
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 28
15
Thermal Expansion, µm/m-K 12
17

Otherwise Unclassified Properties

Base Metal Price, % relative 18
25
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 8.9
4.4
Embodied Energy, MJ/kg 130
63
Embodied Water, L/kg 100
200

Common Calculations

PREN (Pitting Resistance) 35
27
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26 to 76
18
Strength to Weight: Bending, points 23 to 47
18
Thermal Diffusivity, mm2/s 7.8
3.9
Thermal Shock Resistance, points 24 to 69
11

Alloy Composition

Carbon (C), % 1.0 to 1.1
0.2 to 0.6
Chromium (Cr), % 3.5 to 4.0
24 to 28
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 79.8 to 83.8
44.8 to 57.8
Manganese (Mn), % 0.15 to 0.4
0 to 2.0
Molybdenum (Mo), % 8.2 to 9.2
0 to 0.5
Nickel (Ni), % 0 to 0.3
18 to 22
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0.2 to 0.55
0 to 2.0
Sulfur (S), % 0 to 0.030
0 to 0.040
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.8 to 2.3
0