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ASTM A387 Grade 9 Steel vs. S46910 Stainless Steel

Both ASTM A387 grade 9 steel and S46910 stainless steel are iron alloys. They have 81% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is ASTM A387 grade 9 steel and the bottom bar is S46910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 150 to 180
270 to 630
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 20 to 21
2.2 to 11
Fatigue Strength, MPa 160 to 240
250 to 1020
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 75
76
Shear Strength, MPa 310 to 380
410 to 1410
Tensile Strength: Ultimate (UTS), MPa 500 to 600
680 to 2470
Tensile Strength: Yield (Proof), MPa 230 to 350
450 to 2290

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Mechanical, °C 600
810
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 13
11

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
18
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.1
4.1
Embodied Energy, MJ/kg 28
55
Embodied Water, L/kg 87
140

Common Calculations

PREN (Pitting Resistance) 12
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 83 to 110
48 to 130
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 310
510 to 4780
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 18 to 21
24 to 86
Strength to Weight: Bending, points 18 to 20
22 to 51
Thermal Shock Resistance, points 14 to 17
23 to 84

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.5
Carbon (C), % 0 to 0.15
0 to 0.030
Chromium (Cr), % 8.0 to 10
11 to 13
Copper (Cu), % 0
1.5 to 3.5
Iron (Fe), % 87.1 to 90.8
65 to 76
Manganese (Mn), % 0.3 to 0.6
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.1
3.0 to 5.0
Nickel (Ni), % 0
8.0 to 10
Phosphorus (P), % 0 to 0.025
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.025
0 to 0.015
Titanium (Ti), % 0
0.5 to 1.2
Vanadium (V), % 0 to 0.040
0

Comparable Variants