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EN 1.3975 Stainless Steel vs. EN 1.4621 Stainless Steel

Both EN 1.3975 stainless steel and EN 1.4621 stainless steel are iron alloys. They have 80% of their average alloy composition in common. There are 27 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 1.3975 stainless steel and the bottom bar is EN 1.4621 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 27
25
Fatigue Strength, MPa 230
190
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
78
Tensile Strength: Ultimate (UTS), MPa 660
500
Tensile Strength: Yield (Proof), MPa 320
270

Thermal Properties

Latent Heat of Fusion, J/g 340
290
Maximum Temperature: Corrosion, °C 410
510
Maximum Temperature: Mechanical, °C 910
970
Melting Completion (Liquidus), °C 1360
1440
Melting Onset (Solidus), °C 1320
1390
Specific Heat Capacity, J/kg-K 500
480
Thermal Expansion, µm/m-K 16
11

Otherwise Unclassified Properties

Base Metal Price, % relative 15
14
Density, g/cm3 7.5
7.7
Embodied Carbon, kg CO2/kg material 3.3
2.8
Embodied Energy, MJ/kg 47
41
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 21
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 150
110
Resilience: Unit (Modulus of Resilience), kJ/m3 270
190
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 26
25
Strength to Weight: Axial, points 24
18
Strength to Weight: Bending, points 22
18
Thermal Shock Resistance, points 15
17

Alloy Composition

Carbon (C), % 0 to 0.050
0 to 0.030
Chromium (Cr), % 16 to 18
20 to 21.5
Copper (Cu), % 0
0.1 to 1.0
Iron (Fe), % 58.2 to 65.4
74.4 to 79.7
Manganese (Mn), % 7.0 to 9.0
0 to 1.0
Molybdenum (Mo), % 0 to 1.0
0
Nickel (Ni), % 8.0 to 9.0
0
Niobium (Nb), % 0
0.2 to 1.0
Nitrogen (N), % 0.080 to 0.18
0 to 0.030
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 3.5 to 4.5
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015