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ASTM A387 Grade 22L Class 1 vs. SAE-AISI M3 Class 1 Steel

Both ASTM A387 grade 22L class 1 and SAE-AISI M3 class 1 steel are iron alloys. They have 84% 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 ASTM A387 grade 22L class 1 and the bottom bar is SAE-AISI M3 class 1 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 74
77
Tensile Strength: Ultimate (UTS), MPa 500
770 to 2150

Thermal Properties

Latent Heat of Fusion, J/g 260
260
Melting Completion (Liquidus), °C 1470
1610
Melting Onset (Solidus), °C 1430
1570
Specific Heat Capacity, J/kg-K 470
440
Thermal Conductivity, W/m-K 40
26
Thermal Expansion, µm/m-K 13
12

Otherwise Unclassified Properties

Base Metal Price, % relative 3.8
25
Density, g/cm3 7.9
8.3
Embodied Carbon, kg CO2/kg material 1.7
10
Embodied Energy, MJ/kg 23
150
Embodied Water, L/kg 58
100

Common Calculations

PREN (Pitting Resistance) 5.6
33
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
23
Strength to Weight: Axial, points 18
26 to 72
Strength to Weight: Bending, points 18
22 to 44
Thermal Diffusivity, mm2/s 11
7.2
Thermal Shock Resistance, points 14
24 to 67

Alloy Composition

Carbon (C), % 0 to 0.1
1.0 to 1.1
Chromium (Cr), % 2.0 to 2.5
3.8 to 4.5
Copper (Cu), % 0
0 to 0.25
Iron (Fe), % 95.2 to 96.8
76.9 to 82.9
Manganese (Mn), % 0.3 to 0.6
0.15 to 0.4
Molybdenum (Mo), % 0.9 to 1.1
4.8 to 6.5
Nickel (Ni), % 0
0 to 0.3
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 0.5
0.2 to 0.45
Sulfur (S), % 0 to 0.025
0 to 0.030
Tungsten (W), % 0
5.0 to 6.8
Vanadium (V), % 0
2.3 to 2.8