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EN 1.4971 Stainless Steel vs. EN 1.1170 Steel

Both EN 1.4971 stainless steel and EN 1.1170 steel are iron alloys. They have a modest 32% of their average alloy composition in common, which, by itself, doesn't mean much. There are 29 material properties with values for both materials. Properties with values for just one material (5, 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 1.1170 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 240
180 to 210
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 34
16 to 17
Fatigue Strength, MPa 270
220 to 330
Poisson's Ratio 0.29
0.29
Shear Modulus, GPa 81
73
Shear Strength, MPa 530
390 to 450
Tensile Strength: Ultimate (UTS), MPa 800
640 to 730
Tensile Strength: Yield (Proof), MPa 340
330 to 500

Thermal Properties

Latent Heat of Fusion, J/g 300
250
Maximum Temperature: Mechanical, °C 1100
400
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
50
Thermal Expansion, µm/m-K 15
12

Otherwise Unclassified Properties

Base Metal Price, % relative 70
2.1
Density, g/cm3 8.4
7.8
Embodied Carbon, kg CO2/kg material 7.6
1.5
Embodied Energy, MJ/kg 110
19
Embodied Water, L/kg 300
49

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 220
91 to 100
Resilience: Unit (Modulus of Resilience), kJ/m3 280
290 to 670
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 26
23 to 26
Strength to Weight: Bending, points 23
21 to 23
Thermal Diffusivity, mm2/s 3.4
13
Thermal Shock Resistance, points 19
20 to 23

Alloy Composition

Carbon (C), % 0.080 to 0.16
0.25 to 0.32
Chromium (Cr), % 20 to 22.5
0 to 0.4
Cobalt (Co), % 18.5 to 21
0
Iron (Fe), % 24.3 to 37.1
96.7 to 98.5
Manganese (Mn), % 0 to 2.0
1.3 to 1.7
Molybdenum (Mo), % 2.5 to 3.5
0 to 0.1
Nickel (Ni), % 19 to 21
0 to 0.4
Niobium (Nb), % 0.75 to 1.3
0
Nitrogen (N), % 0.1 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.4
Sulfur (S), % 0 to 0.015
0 to 0.035
Tungsten (W), % 2.0 to 3.0
0