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EN 1.3975 Stainless Steel vs. SAE-AISI 9255 Steel

Both EN 1.3975 stainless steel and SAE-AISI 9255 steel are iron alloys. They have 65% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.3975 stainless steel and the bottom bar is SAE-AISI 9255 steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
200
Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 27
21
Fatigue Strength, MPa 230
270
Poisson's Ratio 0.28
0.29
Shear Modulus, GPa 76
72
Tensile Strength: Ultimate (UTS), MPa 660
680
Tensile Strength: Yield (Proof), MPa 320
390

Thermal Properties

Latent Heat of Fusion, J/g 340
280
Maximum Temperature: Mechanical, °C 910
400
Melting Completion (Liquidus), °C 1360
1430
Melting Onset (Solidus), °C 1320
1390
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 16
13

Otherwise Unclassified Properties

Base Metal Price, % relative 15
2.0
Density, g/cm3 7.5
7.7
Embodied Carbon, kg CO2/kg material 3.3
1.5
Embodied Energy, MJ/kg 47
20
Embodied Water, L/kg 150
46

Common Calculations

Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
120
Resilience: Unit (Modulus of Resilience), kJ/m3 270
400
Stiffness to Weight: Axial, points 14
13
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 24
24
Strength to Weight: Bending, points 22
22
Thermal Shock Resistance, points 15
21

Alloy Composition

Carbon (C), % 0 to 0.050
0.51 to 0.59
Chromium (Cr), % 16 to 18
0
Iron (Fe), % 58.2 to 65.4
96.2 to 97
Manganese (Mn), % 7.0 to 9.0
0.7 to 1.0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 8.0 to 9.0
0
Nitrogen (N), % 0.080 to 0.18
0
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 3.5 to 4.5
1.8 to 2.2
Sulfur (S), % 0 to 0.030
0 to 0.040