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EN 1.4658 Stainless Steel vs. S40975 Stainless Steel

Both EN 1.4658 stainless steel and S40975 stainless steel are iron alloys. They have 70% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4658 stainless steel and the bottom bar is S40975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
170
Elastic (Young's, Tensile) Modulus, GPa 210
190
Elongation at Break, % 28
22
Fatigue Strength, MPa 530
210
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
75
Shear Strength, MPa 580
290
Tensile Strength: Ultimate (UTS), MPa 900
460
Tensile Strength: Yield (Proof), MPa 730
310

Thermal Properties

Latent Heat of Fusion, J/g 300
270
Maximum Temperature: Corrosion, °C 460
450
Maximum Temperature: Mechanical, °C 1100
710
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
26
Thermal Expansion, µm/m-K 13
10

Otherwise Unclassified Properties

Base Metal Price, % relative 25
6.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.5
2.0
Embodied Energy, MJ/kg 61
28
Embodied Water, L/kg 200
95

Common Calculations

PREN (Pitting Resistance) 49
11
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
93
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
250
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
17
Strength to Weight: Bending, points 26
17
Thermal Diffusivity, mm2/s 4.3
7.0
Thermal Shock Resistance, points 24
17

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 26 to 29
10.5 to 11.7
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 50.9 to 63.7
84.4 to 89
Manganese (Mn), % 0 to 1.5
0 to 1.0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 5.5 to 9.5
0.5 to 1.0
Nitrogen (N), % 0.3 to 0.5
0 to 0.030
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.030
Titanium (Ti), % 0
0 to 0.75