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AISI 334 Stainless Steel vs. SAE-AISI 1140 Steel

Both AISI 334 stainless steel and SAE-AISI 1140 steel are iron alloys. They have 60% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (8, in this case) are not shown.

For each property being compared, the top bar is AISI 334 stainless steel and the bottom bar is SAE-AISI 1140 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
170 to 180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 34
14 to 18
Fatigue Strength, MPa 150
230 to 370
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
72
Shear Strength, MPa 360
370 to 420
Tensile Strength: Ultimate (UTS), MPa 540
600 to 700
Tensile Strength: Yield (Proof), MPa 190
340 to 570

Thermal Properties

Latent Heat of Fusion, J/g 290
250
Maximum Temperature: Mechanical, °C 1000
400
Melting Completion (Liquidus), °C 1410
1460
Melting Onset (Solidus), °C 1370
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 22
1.8
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.1
1.4
Embodied Energy, MJ/kg 59
18
Embodied Water, L/kg 170
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
89 to 93
Resilience: Unit (Modulus of Resilience), kJ/m3 96
310 to 870
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 19
21 to 25
Strength to Weight: Bending, points 19
20 to 22
Thermal Shock Resistance, points 12
18 to 21

Alloy Composition

Aluminum (Al), % 0.15 to 0.6
0
Carbon (C), % 0 to 0.080
0.37 to 0.44
Chromium (Cr), % 18 to 20
0
Iron (Fe), % 55.7 to 62.7
98.4 to 98.9
Manganese (Mn), % 0 to 1.0
0.7 to 1.0
Nickel (Ni), % 19 to 21
0
Phosphorus (P), % 0 to 0.030
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0.080 to 0.13
Titanium (Ti), % 0.15 to 0.6
0