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SAE-AISI M34 Steel vs. ASTM A387 Grade 2 Steel

Both SAE-AISI M34 steel and ASTM A387 grade 2 steel are iron alloys. They have 76% 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 M34 steel and the bottom bar is ASTM A387 grade 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 77
73
Tensile Strength: Ultimate (UTS), MPa 800 to 2170
470 to 550

Thermal Properties

Latent Heat of Fusion, J/g 270
250
Melting Completion (Liquidus), °C 1540
1470
Melting Onset (Solidus), °C 1500
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 24
45
Thermal Expansion, µm/m-K 12
13

Otherwise Unclassified Properties

Base Metal Price, % relative 32
2.6
Density, g/cm3 8.2
7.9
Embodied Carbon, kg CO2/kg material 9.5
1.6
Embodied Energy, MJ/kg 140
20
Embodied Water, L/kg 150
50

Common Calculations

PREN (Pitting Resistance) 35
2.4
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 27 to 74
16 to 20
Strength to Weight: Bending, points 23 to 46
17 to 19
Thermal Diffusivity, mm2/s 6.7
12
Thermal Shock Resistance, points 25 to 67
14 to 16

Alloy Composition

Carbon (C), % 0.85 to 0.92
0.050 to 0.21
Chromium (Cr), % 3.5 to 4.0
0.5 to 0.8
Cobalt (Co), % 7.8 to 8.8
0
Copper (Cu), % 0 to 0.25
0
Iron (Fe), % 71.3 to 76.5
97.1 to 98.3
Manganese (Mn), % 0.15 to 0.4
0.55 to 0.8
Molybdenum (Mo), % 7.8 to 9.2
0.45 to 0.6
Nickel (Ni), % 0 to 0.3
0
Phosphorus (P), % 0 to 0.030
0 to 0.025
Silicon (Si), % 0.2 to 0.45
0.15 to 0.4
Sulfur (S), % 0 to 0.030
0 to 0.025
Tungsten (W), % 1.4 to 2.1
0
Vanadium (V), % 1.9 to 2.3
0

Comparable Variants