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EN 1.4971 Stainless Steel vs. EN 1.4864 Stainless Steel

Both EN 1.4971 stainless steel and EN 1.4864 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 68% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, 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 1.4864 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
190
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
33
Fatigue Strength, MPa 270
200
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
75
Shear Strength, MPa 530
430
Tensile Strength: Ultimate (UTS), MPa 800
650
Tensile Strength: Yield (Proof), MPa 340
260

Thermal Properties

Latent Heat of Fusion, J/g 300
310
Maximum Temperature: Corrosion, °C 570
410
Maximum Temperature: Mechanical, °C 1100
1100
Melting Completion (Liquidus), °C 1460
1390
Melting Onset (Solidus), °C 1410
1340
Specific Heat Capacity, J/kg-K 450
480
Thermal Conductivity, W/m-K 13
13
Thermal Expansion, µm/m-K 15
14

Otherwise Unclassified Properties

Base Metal Price, % relative 70
30
Density, g/cm3 8.4
8.0
Embodied Carbon, kg CO2/kg material 7.6
5.3
Embodied Energy, MJ/kg 110
75
Embodied Water, L/kg 300
180

Common Calculations

PREN (Pitting Resistance) 38
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
170
Resilience: Unit (Modulus of Resilience), kJ/m3 280
170
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
23
Strength to Weight: Bending, points 23
21
Thermal Diffusivity, mm2/s 3.4
3.3
Thermal Shock Resistance, points 19
17

Alloy Composition

Carbon (C), % 0.080 to 0.16
0 to 0.15
Chromium (Cr), % 20 to 22.5
15 to 17
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
41.7 to 51
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.5
0
Nickel (Ni), % 19 to 21
33 to 37
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 1.0
1.0 to 2.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Tungsten (W), % 2.0 to 3.0
0