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EN 1.4658 Stainless Steel vs. EN 1.4655 Stainless Steel

Both EN 1.4658 stainless steel and EN 1.4655 stainless steel are iron alloys. They have 87% 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 1.4658 stainless steel and the bottom bar is EN 1.4655 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 28
23 to 25
Fatigue Strength, MPa 530
320
Poisson's Ratio 0.27
0.27
Shear Modulus, GPa 81
78
Shear Strength, MPa 580
460
Tensile Strength: Ultimate (UTS), MPa 900
720 to 730
Tensile Strength: Yield (Proof), MPa 730
450 to 480

Thermal Properties

Latent Heat of Fusion, J/g 300
290
Maximum Temperature: Corrosion, °C 460
440
Maximum Temperature: Mechanical, °C 1100
1050
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
13

Otherwise Unclassified Properties

Base Metal Price, % relative 25
15
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 4.5
2.9
Embodied Energy, MJ/kg 61
41
Embodied Water, L/kg 200
160

Common Calculations

PREN (Pitting Resistance) 49
26
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
150 to 160
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
510 to 580
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
26
Strength to Weight: Bending, points 26
23
Thermal Diffusivity, mm2/s 4.3
4.0
Thermal Shock Resistance, points 24
20

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.030
Chromium (Cr), % 26 to 29
22 to 24
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
1.0 to 3.0
Iron (Fe), % 50.9 to 63.7
63.6 to 73.4
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 4.0 to 5.0
0.1 to 0.6
Nickel (Ni), % 5.5 to 9.5
3.5 to 5.5
Nitrogen (N), % 0.3 to 0.5
0.050 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.035
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015