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EN 1.4971 Stainless Steel vs. S82031 Stainless Steel

Both EN 1.4971 stainless steel and S82031 stainless steel are iron alloys. They have 57% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (4, 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 S82031 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
39
Fatigue Strength, MPa 270
490
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
78
Shear Strength, MPa 530
540
Tensile Strength: Ultimate (UTS), MPa 800
780
Tensile Strength: Yield (Proof), MPa 340
570

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 570
430
Maximum Temperature: Mechanical, °C 1100
980
Melting Completion (Liquidus), °C 1460
1430
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 15
13

Otherwise Unclassified Properties

Base Metal Price, % relative 70
13
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 7.6
2.8
Embodied Energy, MJ/kg 110
39
Embodied Water, L/kg 300
150

Common Calculations

PREN (Pitting Resistance) 38
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
280
Resilience: Unit (Modulus of Resilience), kJ/m3 280
820
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
28
Strength to Weight: Bending, points 23
24
Thermal Diffusivity, mm2/s 3.4
3.9
Thermal Shock Resistance, points 19
22

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.050
Chromium (Cr), % 20 to 22.5
19 to 22
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 1.0
Iron (Fe), % 24.3 to 37.1
68 to 78.3
Manganese (Mn), % 0 to 2.0
0 to 2.5
Molybdenum (Mo), % 2.5 to 3.5
0.6 to 1.4
Nickel (Ni), % 19 to 21
2.0 to 4.0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0.14 to 0.24
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.8
Sulfur (S), % 0 to 0.015
0 to 0.0050
Tungsten (W), % 2.0 to 3.0
0