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EN 1.4971 Stainless Steel vs. EN 1.4580 Stainless Steel

Both EN 1.4971 stainless steel and EN 1.4580 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 65% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 EN 1.4580 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
200
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
40
Fatigue Strength, MPa 270
210
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
78
Shear Strength, MPa 530
430
Tensile Strength: Ultimate (UTS), MPa 800
620
Tensile Strength: Yield (Proof), MPa 340
250

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 570
480
Maximum Temperature: Mechanical, °C 1100
950
Melting Completion (Liquidus), °C 1460
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
22
Density, g/cm3 8.4
7.9
Embodied Carbon, kg CO2/kg material 7.6
4.3
Embodied Energy, MJ/kg 110
60
Embodied Water, L/kg 300
150

Common Calculations

PREN (Pitting Resistance) 38
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
200
Resilience: Unit (Modulus of Resilience), kJ/m3 280
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
22
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 3.4
4.0
Thermal Shock Resistance, points 19
14

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.080
Chromium (Cr), % 20 to 22.5
16.5 to 18.5
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
61.4 to 71
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
2.0 to 2.5
Nickel (Ni), % 19 to 21
10.5 to 13.5
Niobium (Nb), % 0.75 to 1.3
0 to 1.0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 2.0 to 3.0
0