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EN 1.4057 Stainless Steel vs. EN 1.8958 Steel

Both EN 1.4057 stainless steel and EN 1.8958 steel are iron alloys. They have 82% 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 1.4057 stainless steel and the bottom bar is EN 1.8958 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11 to 17
19
Fatigue Strength, MPa 320 to 430
150
Impact Strength: V-Notched Charpy, J 16 to 21
30
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 77
73
Shear Strength, MPa 520 to 580
270
Tensile Strength: Ultimate (UTS), MPa 840 to 980
430
Tensile Strength: Yield (Proof), MPa 530 to 790
220

Thermal Properties

Latent Heat of Fusion, J/g 280
250
Maximum Temperature: Mechanical, °C 850
410
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1390
1420
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 25
46
Thermal Expansion, µm/m-K 10
13

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
7.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
8.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
2.4
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.2
1.5
Embodied Energy, MJ/kg 32
19
Embodied Water, L/kg 120
50

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 96 to 130
70
Resilience: Unit (Modulus of Resilience), kJ/m3 700 to 1610
130
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 30 to 35
15
Strength to Weight: Bending, points 26 to 28
16
Thermal Diffusivity, mm2/s 6.7
12
Thermal Shock Resistance, points 30 to 35
13

Alloy Composition

Carbon (C), % 0.12 to 0.22
0 to 0.16
Chromium (Cr), % 15 to 17
0.35 to 0.85
Copper (Cu), % 0
0.2 to 0.6
Iron (Fe), % 77.7 to 83.4
96.5 to 99.3
Manganese (Mn), % 0 to 1.5
0.15 to 0.7
Nickel (Ni), % 1.5 to 2.5
0 to 0.7
Nitrogen (N), % 0
0 to 0.010
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.45
Sulfur (S), % 0 to 0.015
0 to 0.040