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EN 1.4971 Stainless Steel vs. EN 1.7711 Steel

Both EN 1.4971 stainless steel and EN 1.7711 steel are iron alloys. They have a modest 33% of their average alloy composition in common, which, by itself, doesn't mean much. 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 1.7711 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
210 to 280
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
16 to 22
Fatigue Strength, MPa 270
290 to 520
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 530
440 to 570
Tensile Strength: Ultimate (UTS), MPa 800
690 to 930
Tensile Strength: Yield (Proof), MPa 340
400 to 800

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
430
Melting Completion (Liquidus), °C 1460
1460
Melting Onset (Solidus), °C 1410
1420
Specific Heat Capacity, J/kg-K 450
470
Thermal Conductivity, W/m-K 13
33
Thermal Expansion, µm/m-K 15
11

Otherwise Unclassified Properties

Base Metal Price, % relative 70
3.0
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.6
2.3
Embodied Energy, MJ/kg 110
32
Embodied Water, L/kg 300
54

Common Calculations

PREN (Pitting Resistance) 38
2.9
Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
130 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 280
430 to 1690
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
24 to 33
Strength to Weight: Bending, points 23
22 to 27
Thermal Diffusivity, mm2/s 3.4
8.9
Thermal Shock Resistance, points 19
24 to 32

Alloy Composition

Aluminum (Al), % 0
0 to 0.015
Carbon (C), % 0.080 to 0.16
0.36 to 0.44
Chromium (Cr), % 20 to 22.5
0.9 to 1.2
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
96 to 97.5
Manganese (Mn), % 0 to 2.0
0.45 to 0.85
Molybdenum (Mo), % 2.5 to 3.5
0.5 to 0.65
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 0.025
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.030
Tungsten (W), % 2.0 to 3.0
0
Vanadium (V), % 0
0.25 to 0.35