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EN 1.4318 Stainless Steel vs. EN 1.3975 Stainless Steel

Both EN 1.4318 stainless steel and EN 1.3975 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 87% of their average alloy composition in common. There are 28 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4318 stainless steel and the bottom bar is EN 1.3975 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
190
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 44
27
Fatigue Strength, MPa 340
230
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 740
660
Tensile Strength: Yield (Proof), MPa 380
320

Thermal Properties

Latent Heat of Fusion, J/g 290
340
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 910
910
Melting Completion (Liquidus), °C 1430
1360
Melting Onset (Solidus), °C 1380
1320
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 16
16

Otherwise Unclassified Properties

Base Metal Price, % relative 13
15
Density, g/cm3 7.8
7.5
Embodied Carbon, kg CO2/kg material 2.8
3.3
Embodied Energy, MJ/kg 39
47
Embodied Water, L/kg 130
150

Common Calculations

PREN (Pitting Resistance) 20
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 280
150
Resilience: Unit (Modulus of Resilience), kJ/m3 360
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 27
24
Strength to Weight: Bending, points 23
22
Thermal Shock Resistance, points 17
15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.050
Chromium (Cr), % 16.5 to 18.5
16 to 18
Iron (Fe), % 70.2 to 77.4
58.2 to 65.4
Manganese (Mn), % 0 to 2.0
7.0 to 9.0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 6.0 to 8.0
8.0 to 9.0
Nitrogen (N), % 0.1 to 0.2
0.080 to 0.18
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
3.5 to 4.5
Sulfur (S), % 0 to 0.015
0 to 0.030