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EN 1.4971 Stainless Steel vs. EN 1.4634 Stainless Steel

Both EN 1.4971 stainless steel and EN 1.4634 stainless steel are iron alloys. They have 51% of their average alloy composition in common. There are 30 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 1.4634 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
21
Fatigue Strength, MPa 270
180
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 530
340
Tensile Strength: Ultimate (UTS), MPa 800
540
Tensile Strength: Yield (Proof), MPa 340
280

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 570
500
Maximum Temperature: Mechanical, °C 1100
900
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
21
Thermal Expansion, µm/m-K 15
10

Otherwise Unclassified Properties

Base Metal Price, % relative 70
13
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 7.6
2.9
Embodied Energy, MJ/kg 110
42
Embodied Water, L/kg 300
140

Common Calculations

PREN (Pitting Resistance) 38
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
93
Resilience: Unit (Modulus of Resilience), kJ/m3 280
200
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
20
Strength to Weight: Bending, points 23
19
Thermal Diffusivity, mm2/s 3.4
5.8
Thermal Shock Resistance, points 19
19

Alloy Composition

Aluminum (Al), % 0
0.2 to 1.5
Carbon (C), % 0.080 to 0.16
0 to 0.030
Chromium (Cr), % 20 to 22.5
17.5 to 18.5
Cobalt (Co), % 18.5 to 21
0
Copper (Cu), % 0
0 to 0.5
Iron (Fe), % 24.3 to 37.1
74.9 to 81.8
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0 to 0.5
Nickel (Ni), % 19 to 21
0 to 0.5
Niobium (Nb), % 0.75 to 1.3
0.3 to 1.0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.050
Silicon (Si), % 0 to 1.0
0.2 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.050
Tungsten (W), % 2.0 to 3.0
0