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EN 1.4971 Stainless Steel vs. EN 1.4539 Stainless Steel

Both EN 1.4971 stainless steel and EN 1.4539 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 75% 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 1.4539 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
200
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
38
Fatigue Strength, MPa 270
220
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
79
Shear Strength, MPa 530
430
Tensile Strength: Ultimate (UTS), MPa 800
630
Tensile Strength: Yield (Proof), MPa 340
260

Thermal Properties

Latent Heat of Fusion, J/g 300
300
Maximum Temperature: Corrosion, °C 570
420
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1440
Melting Onset (Solidus), °C 1410
1390
Specific Heat Capacity, J/kg-K 450
460
Thermal Conductivity, W/m-K 13
12
Thermal Expansion, µm/m-K 15
16

Otherwise Unclassified Properties

Base Metal Price, % relative 70
31
Density, g/cm3 8.4
8.1
Embodied Carbon, kg CO2/kg material 7.6
5.7
Embodied Energy, MJ/kg 110
78
Embodied Water, L/kg 300
200

Common Calculations

PREN (Pitting Resistance) 38
36
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
190
Resilience: Unit (Modulus of Resilience), kJ/m3 280
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
22
Strength to Weight: Bending, points 23
20
Thermal Diffusivity, mm2/s 3.4
3.2
Thermal Shock Resistance, points 19
14

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.020
Chromium (Cr), % 20 to 22.5
19 to 21
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 24.3 to 37.1
43.1 to 51.8
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
4.0 to 5.0
Nickel (Ni), % 19 to 21
24 to 26
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0 to 0.15
Phosphorus (P), % 0 to 0.035
0 to 0.030
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.010
Tungsten (W), % 2.0 to 3.0
0