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EN 1.4971 Stainless Steel vs. EN 1.4125 Stainless Steel

Both EN 1.4971 stainless steel and EN 1.4125 stainless steel are iron alloys. They have 49% 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 1.4125 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
250
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 34
19
Fatigue Strength, MPa 270
300
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 530
500
Tensile Strength: Ultimate (UTS), MPa 800
800
Tensile Strength: Yield (Proof), MPa 340
470

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 570
390
Maximum Temperature: Mechanical, °C 1100
870
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
15
Thermal Expansion, µm/m-K 15
10

Otherwise Unclassified Properties

Base Metal Price, % relative 70
9.0
Density, g/cm3 8.4
7.7
Embodied Carbon, kg CO2/kg material 7.6
2.3
Embodied Energy, MJ/kg 110
32
Embodied Water, L/kg 300
120

Common Calculations

PREN (Pitting Resistance) 38
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
130
Resilience: Unit (Modulus of Resilience), kJ/m3 280
570
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 26
29
Strength to Weight: Bending, points 23
25
Thermal Diffusivity, mm2/s 3.4
4.1
Thermal Shock Resistance, points 19
29

Alloy Composition

Carbon (C), % 0.080 to 0.16
1.0 to 1.2
Chromium (Cr), % 20 to 22.5
16 to 18
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
78 to 82.7
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 2.5 to 3.5
0.4 to 0.8
Nickel (Ni), % 19 to 21
0
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
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