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EN 1.4621 Stainless Steel vs. EN 1.4658 Stainless Steel

Both EN 1.4621 stainless steel and EN 1.4658 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 30 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 1.4621 stainless steel and the bottom bar is EN 1.4658 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
210
Elongation at Break, % 25
28
Fatigue Strength, MPa 190
530
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 78
81
Shear Strength, MPa 320
580
Tensile Strength: Ultimate (UTS), MPa 500
900
Tensile Strength: Yield (Proof), MPa 270
730

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 510
460
Maximum Temperature: Mechanical, °C 970
1100
Melting Completion (Liquidus), °C 1440
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 11
13

Otherwise Unclassified Properties

Base Metal Price, % relative 14
25
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
4.5
Embodied Energy, MJ/kg 41
61
Embodied Water, L/kg 140
200

Common Calculations

PREN (Pitting Resistance) 21
49
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
240
Resilience: Unit (Modulus of Resilience), kJ/m3 190
1280
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
32
Strength to Weight: Bending, points 18
26
Thermal Diffusivity, mm2/s 5.7
4.3
Thermal Shock Resistance, points 17
24

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 20 to 21.5
26 to 29
Cobalt (Co), % 0
0.5 to 2.0
Copper (Cu), % 0.1 to 1.0
0 to 1.0
Iron (Fe), % 74.4 to 79.7
50.9 to 63.7
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0
4.0 to 5.0
Nickel (Ni), % 0
5.5 to 9.5
Niobium (Nb), % 0.2 to 1.0
0
Nitrogen (N), % 0 to 0.030
0.3 to 0.5
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 0.5
Sulfur (S), % 0 to 0.015
0 to 0.010