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EN 1.7711 Steel vs. EN 1.4458 Stainless Steel

Both EN 1.7711 steel and EN 1.4458 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 (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.7711 steel and the bottom bar is EN 1.4458 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 210 to 280
150
Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 16 to 22
34
Fatigue Strength, MPa 290 to 520
150
Poisson's Ratio 0.29
0.28
Shear Modulus, GPa 73
78
Tensile Strength: Ultimate (UTS), MPa 690 to 930
510
Tensile Strength: Yield (Proof), MPa 400 to 800
190

Thermal Properties

Latent Heat of Fusion, J/g 250
300
Maximum Temperature: Mechanical, °C 430
1100
Melting Completion (Liquidus), °C 1460
1420
Melting Onset (Solidus), °C 1420
1370
Specific Heat Capacity, J/kg-K 470
470
Thermal Conductivity, W/m-K 33
16
Thermal Expansion, µm/m-K 11
15

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 7.4
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 8.5
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 3.0
30
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.3
5.4
Embodied Energy, MJ/kg 32
75
Embodied Water, L/kg 54
200

Common Calculations

PREN (Pitting Resistance) 2.9
30
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130 to 140
140
Resilience: Unit (Modulus of Resilience), kJ/m3 430 to 1690
89
Stiffness to Weight: Axial, points 13
14
Stiffness to Weight: Bending, points 24
24
Strength to Weight: Axial, points 24 to 33
17
Strength to Weight: Bending, points 22 to 27
18
Thermal Diffusivity, mm2/s 8.9
4.2
Thermal Shock Resistance, points 24 to 32
12

Alloy Composition

Aluminum (Al), % 0 to 0.015
0
Carbon (C), % 0.36 to 0.44
0 to 0.030
Chromium (Cr), % 0.9 to 1.2
19 to 22
Copper (Cu), % 0
0 to 2.0
Iron (Fe), % 96 to 97.5
40.2 to 53
Manganese (Mn), % 0.45 to 0.85
0 to 2.0
Molybdenum (Mo), % 0.5 to 0.65
2.0 to 2.5
Nickel (Ni), % 0
26 to 30
Nitrogen (N), % 0
0 to 0.2
Phosphorus (P), % 0 to 0.025
0 to 0.035
Silicon (Si), % 0 to 0.4
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.025
Vanadium (V), % 0.25 to 0.35
0