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EN 1.4971 Stainless Steel vs. SAE-AISI 1141 Steel

Both EN 1.4971 stainless steel and SAE-AISI 1141 steel are iron alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4971 stainless steel and the bottom bar is SAE-AISI 1141 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
210 to 220
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
11 to 17
Fatigue Strength, MPa 270
270 to 430
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
72
Shear Strength, MPa 530
460 to 480
Tensile Strength: Ultimate (UTS), MPa 800
740 to 810
Tensile Strength: Yield (Proof), MPa 340
400 to 700

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
51
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
1.9
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.6
1.4
Embodied Energy, MJ/kg 110
19
Embodied Water, L/kg 300
47

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
86 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 280
430 to 1290
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
26 to 29
Strength to Weight: Bending, points 23
23 to 25
Thermal Diffusivity, mm2/s 3.4
14
Thermal Shock Resistance, points 19
24 to 26

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.37 to 0.45
Chromium (Cr), % 20 to 22.5
0
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
97.7 to 98.2
Manganese (Mn), % 0 to 2.0
1.4 to 1.7
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0
Sulfur (S), % 0 to 0.015
0.080 to 0.13
Tungsten (W), % 2.0 to 3.0
0