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EN 1.4595 Stainless Steel vs. S21800 Stainless Steel

Both EN 1.4595 stainless steel and S21800 stainless steel are iron alloys. Both are furnished in the annealed condition. They have 78% of their average alloy composition in common. There are 28 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 1.4595 stainless steel and the bottom bar is S21800 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 29
40
Fatigue Strength, MPa 180
330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
75
Shear Strength, MPa 310
510
Tensile Strength: Ultimate (UTS), MPa 470
740
Tensile Strength: Yield (Proof), MPa 250
390

Thermal Properties

Latent Heat of Fusion, J/g 280
340
Maximum Temperature: Corrosion, °C 460
410
Maximum Temperature: Mechanical, °C 810
900
Melting Completion (Liquidus), °C 1450
1360
Melting Onset (Solidus), °C 1400
1310
Specific Heat Capacity, J/kg-K 480
500
Thermal Expansion, µm/m-K 10
16

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 7.7
7.5
Embodied Carbon, kg CO2/kg material 2.4
3.1
Embodied Energy, MJ/kg 34
45
Embodied Water, L/kg 110
150

Common Calculations

PREN (Pitting Resistance) 15
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
250
Resilience: Unit (Modulus of Resilience), kJ/m3 150
390
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 17
27
Strength to Weight: Bending, points 17
24
Thermal Shock Resistance, points 17
17

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.1
Chromium (Cr), % 14 to 16
16 to 18
Iron (Fe), % 81.3 to 85.8
59.1 to 65.4
Manganese (Mn), % 0 to 1.0
7.0 to 9.0
Nickel (Ni), % 0
8.0 to 9.0
Niobium (Nb), % 0.2 to 0.6
0
Nitrogen (N), % 0 to 0.020
0.080 to 0.18
Phosphorus (P), % 0 to 0.025
0 to 0.060
Silicon (Si), % 0 to 1.0
3.5 to 4.5
Sulfur (S), % 0 to 0.015
0 to 0.030