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EN 1.4057 Stainless Steel vs. S40975 Stainless Steel

Both EN 1.4057 stainless steel and S40975 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common. There are 32 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 S40975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 11 to 17
22
Fatigue Strength, MPa 320 to 430
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
75
Shear Strength, MPa 520 to 580
290
Tensile Strength: Ultimate (UTS), MPa 840 to 980
460
Tensile Strength: Yield (Proof), MPa 530 to 790
310

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 400
450
Maximum Temperature: Mechanical, °C 850
710
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
26
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
6.5
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.2
2.0
Embodied Energy, MJ/kg 32
28
Embodied Water, L/kg 120
95

Common Calculations

PREN (Pitting Resistance) 16
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 96 to 130
93
Resilience: Unit (Modulus of Resilience), kJ/m3 700 to 1610
250
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30 to 35
17
Strength to Weight: Bending, points 26 to 28
17
Thermal Diffusivity, mm2/s 6.7
7.0
Thermal Shock Resistance, points 30 to 35
17

Alloy Composition

Carbon (C), % 0.12 to 0.22
0 to 0.030
Chromium (Cr), % 15 to 17
10.5 to 11.7
Iron (Fe), % 77.7 to 83.4
84.4 to 89
Manganese (Mn), % 0 to 1.5
0 to 1.0
Nickel (Ni), % 1.5 to 2.5
0.5 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0 to 0.75