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SAE-AISI 94B17 Steel vs. ASTM A387 Grade 2 Steel

Both SAE-AISI 94B17 steel and ASTM A387 grade 2 steel are iron alloys. Their average alloy composition is basically identical. There are 31 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 94B17 steel and the bottom bar is ASTM A387 grade 2 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 130
140 to 170
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 25
25
Fatigue Strength, MPa 200
190 to 250
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 73
73
Shear Strength, MPa 280
300 to 350
Tensile Strength: Ultimate (UTS), MPa 440
470 to 550
Tensile Strength: Yield (Proof), MPa 270
260 to 350

Thermal Properties

Latent Heat of Fusion, J/g 250
250
Maximum Temperature: Mechanical, °C 410
420
Melting Completion (Liquidus), °C 1460
1470
Melting Onset (Solidus), °C 1420
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 39
45
Thermal Expansion, µm/m-K 13
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.2
7.2
Electrical Conductivity: Equal Weight (Specific), % IACS 8.3
8.3

Otherwise Unclassified Properties

Base Metal Price, % relative 2.4
2.6
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 1.5
1.6
Embodied Energy, MJ/kg 20
20
Embodied Water, L/kg 49
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 96
98 to 120
Resilience: Unit (Modulus of Resilience), kJ/m3 200
180 to 320
Stiffness to Weight: Axial, points 13
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 16
16 to 20
Strength to Weight: Bending, points 16
17 to 19
Thermal Diffusivity, mm2/s 10
12
Thermal Shock Resistance, points 13
14 to 16

Alloy Composition

Boron (B), % 0.00050 to 0.0030
0
Carbon (C), % 0.15 to 0.2
0.050 to 0.21
Chromium (Cr), % 0.3 to 0.5
0.5 to 0.8
Iron (Fe), % 97.1 to 98.3
97.1 to 98.3
Manganese (Mn), % 0.75 to 1.0
0.55 to 0.8
Molybdenum (Mo), % 0.080 to 0.15
0.45 to 0.6
Nickel (Ni), % 0.3 to 0.6
0
Phosphorus (P), % 0 to 0.035
0 to 0.025
Silicon (Si), % 0.15 to 0.35
0.15 to 0.4
Sulfur (S), % 0 to 0.040
0 to 0.025