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EN 1.4422 Stainless Steel vs. EN 1.4971 Stainless Steel

Both EN 1.4422 stainless steel and EN 1.4971 stainless steel are iron alloys. They have 50% 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 1.4422 stainless steel and the bottom bar is EN 1.4971 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 17
34
Fatigue Strength, MPa 380
270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
81
Shear Strength, MPa 520
530
Tensile Strength: Ultimate (UTS), MPa 850
800
Tensile Strength: Yield (Proof), MPa 630
340

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
570
Maximum Temperature: Mechanical, °C 760
1100
Melting Completion (Liquidus), °C 1450
1460
Melting Onset (Solidus), °C 1410
1410
Specific Heat Capacity, J/kg-K 470
450
Thermal Conductivity, W/m-K 16
13
Thermal Expansion, µm/m-K 10
15

Otherwise Unclassified Properties

Base Metal Price, % relative 11
70
Density, g/cm3 7.9
8.4
Embodied Carbon, kg CO2/kg material 2.7
7.6
Embodied Energy, MJ/kg 37
110
Embodied Water, L/kg 110
300

Common Calculations

PREN (Pitting Resistance) 17
38
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
220
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
280
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30
26
Strength to Weight: Bending, points 25
23
Thermal Diffusivity, mm2/s 4.3
3.4
Thermal Shock Resistance, points 31
19

Alloy Composition

Carbon (C), % 0 to 0.020
0.080 to 0.16
Chromium (Cr), % 11 to 13
20 to 22.5
Cobalt (Co), % 0
18.5 to 21
Copper (Cu), % 0.2 to 0.8
0
Iron (Fe), % 76.8 to 83.5
24.3 to 37.1
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 1.3 to 1.8
2.5 to 3.5
Nickel (Ni), % 4.0 to 5.0
19 to 21
Niobium (Nb), % 0
0.75 to 1.3
Nitrogen (N), % 0 to 0.020
0.1 to 0.2
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.0030
0 to 0.015
Tungsten (W), % 0
2.0 to 3.0