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SAE-AISI 1078 Steel vs. S21460 Stainless Steel

Both SAE-AISI 1078 steel and S21460 stainless steel are iron alloys. They have 61% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is SAE-AISI 1078 steel and the bottom bar is S21460 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 230
250
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 11 to 14
46
Fatigue Strength, MPa 270 to 350
390
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 72
77
Shear Strength, MPa 440 to 470
580
Tensile Strength: Ultimate (UTS), MPa 730 to 780
830
Tensile Strength: Yield (Proof), MPa 430 to 570
430

Thermal Properties

Latent Heat of Fusion, J/g 250
290
Maximum Temperature: Mechanical, °C 400
920
Melting Completion (Liquidus), °C 1460
1380
Melting Onset (Solidus), °C 1420
1330
Specific Heat Capacity, J/kg-K 470
480
Thermal Expansion, µm/m-K 11
18

Otherwise Unclassified Properties

Base Metal Price, % relative 1.8
14
Density, g/cm3 7.8
7.6
Embodied Carbon, kg CO2/kg material 1.4
3.0
Embodied Energy, MJ/kg 18
43
Embodied Water, L/kg 45
160

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 77 to 90
320
Resilience: Unit (Modulus of Resilience), kJ/m3 490 to 860
460
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26 to 28
30
Strength to Weight: Bending, points 23 to 24
26
Thermal Shock Resistance, points 25 to 26
17

Alloy Composition

Carbon (C), % 0.72 to 0.85
0 to 0.12
Chromium (Cr), % 0
17 to 19
Iron (Fe), % 98.5 to 99
57.3 to 63.7
Manganese (Mn), % 0.3 to 0.6
14 to 16
Nickel (Ni), % 0
5.0 to 6.0
Nitrogen (N), % 0
0.35 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.060
Silicon (Si), % 0
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.030