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EN 1.4658 Stainless Steel vs. EN 1.4640 Stainless Steel

Both EN 1.4658 stainless steel and EN 1.4640 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (3, 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 1.4640 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 260
190 to 200
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 28
51
Fatigue Strength, MPa 530
230 to 250
Poisson's Ratio 0.27
0.28
Shear Modulus, GPa 81
77
Shear Strength, MPa 580
440 to 460
Tensile Strength: Ultimate (UTS), MPa 900
620 to 650
Tensile Strength: Yield (Proof), MPa 730
240 to 260

Thermal Properties

Latent Heat of Fusion, J/g 300
280
Maximum Temperature: Corrosion, °C 460
420
Maximum Temperature: Mechanical, °C 1100
930
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 13
16

Otherwise Unclassified Properties

Base Metal Price, % relative 25
14
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 4.5
2.8
Embodied Energy, MJ/kg 61
40
Embodied Water, L/kg 200
150

Common Calculations

PREN (Pitting Resistance) 49
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
250 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 1280
150 to 170
Stiffness to Weight: Axial, points 15
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 32
22 to 23
Strength to Weight: Bending, points 26
21
Thermal Diffusivity, mm2/s 4.3
4.0
Thermal Shock Resistance, points 24
14 to 15

Alloy Composition

Carbon (C), % 0 to 0.030
0.030 to 0.080
Chromium (Cr), % 26 to 29
18 to 19
Cobalt (Co), % 0.5 to 2.0
0
Copper (Cu), % 0 to 1.0
1.3 to 2.0
Iron (Fe), % 50.9 to 63.7
67.4 to 73.6
Manganese (Mn), % 0 to 1.5
1.5 to 4.0
Molybdenum (Mo), % 4.0 to 5.0
0
Nickel (Ni), % 5.5 to 9.5
5.5 to 6.9
Nitrogen (N), % 0.3 to 0.5
0.030 to 0.11
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 0.5
Sulfur (S), % 0 to 0.010
0 to 0.015