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SAE-AISI A7 Steel vs. S46910 Stainless Steel

Both SAE-AISI A7 steel and S46910 stainless steel are iron alloys. They have 78% of their average alloy composition in common. There are 20 material properties with values for both materials. Properties with values for just one material (12, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI A7 steel and the bottom bar is S46910 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
76
Tensile Strength: Ultimate (UTS), MPa 800 to 2150
680 to 2470

Thermal Properties

Latent Heat of Fusion, J/g 260
280
Melting Completion (Liquidus), °C 1470
1460
Melting Onset (Solidus), °C 1430
1420
Specific Heat Capacity, J/kg-K 470
470
Thermal Expansion, µm/m-K 12
11

Otherwise Unclassified Properties

Base Metal Price, % relative 10
18
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 13
4.1
Embodied Energy, MJ/kg 200
55
Embodied Water, L/kg 100
140

Common Calculations

PREN (Pitting Resistance) 11
25
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 29 to 77
24 to 86
Strength to Weight: Bending, points 25 to 48
22 to 51
Thermal Shock Resistance, points 27 to 72
23 to 84

Alloy Composition

Aluminum (Al), % 0
0.15 to 0.5
Carbon (C), % 2.0 to 2.9
0 to 0.030
Chromium (Cr), % 5.0 to 5.8
11 to 13
Copper (Cu), % 0 to 0.25
1.5 to 3.5
Iron (Fe), % 81.4 to 87.7
65 to 76
Manganese (Mn), % 0 to 0.8
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.4
3.0 to 5.0
Nickel (Ni), % 0 to 0.3
8.0 to 10
Phosphorus (P), % 0 to 0.030
0 to 0.030
Silicon (Si), % 0 to 0.5
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.015
Titanium (Ti), % 0
0.5 to 1.2
Tungsten (W), % 0.5 to 1.5
0
Vanadium (V), % 3.9 to 5.2
0

Comparable Variants