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EN 1.4640 Stainless Steel vs. EN 1.4527 Stainless Steel

Both EN 1.4640 stainless steel and EN 1.4527 stainless steel are iron alloys. They have 70% 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 1.4640 stainless steel and the bottom bar is EN 1.4527 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 200
140
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
40
Fatigue Strength, MPa 230 to 250
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 620 to 650
480
Tensile Strength: Yield (Proof), MPa 240 to 260
190

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 420
430
Maximum Temperature: Mechanical, °C 930
1100
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1380
1360
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
15

Otherwise Unclassified Properties

Base Metal Price, % relative 14
32
Density, g/cm3 7.8
8.1
Embodied Carbon, kg CO2/kg material 2.8
5.6
Embodied Energy, MJ/kg 40
78
Embodied Water, L/kg 150
210

Common Calculations

PREN (Pitting Resistance) 20
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250 to 260
150
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 170
95
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 22 to 23
17
Strength to Weight: Bending, points 21
17
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 14 to 15
12

Alloy Composition

Carbon (C), % 0.030 to 0.080
0 to 0.060
Chromium (Cr), % 18 to 19
19 to 22
Copper (Cu), % 1.3 to 2.0
3.0 to 4.0
Iron (Fe), % 67.4 to 73.6
37.4 to 48.5
Manganese (Mn), % 1.5 to 4.0
0 to 1.5
Molybdenum (Mo), % 0
2.0 to 3.0
Nickel (Ni), % 5.5 to 6.9
27.5 to 30.5
Nitrogen (N), % 0.030 to 0.11
0
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.030