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EN 1.4640 Stainless Steel vs. EN 1.4580 Stainless Steel

Both EN 1.4640 stainless steel and EN 1.4580 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, 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 1.4580 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 200
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 51
40
Fatigue Strength, MPa 230 to 250
210
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 440 to 460
430
Tensile Strength: Ultimate (UTS), MPa 620 to 650
620
Tensile Strength: Yield (Proof), MPa 240 to 260
250

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 420
480
Maximum Temperature: Mechanical, °C 930
950
Melting Completion (Liquidus), °C 1420
1450
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 14
22
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 2.8
4.3
Embodied Energy, MJ/kg 40
60
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 20
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 250 to 260
200
Resilience: Unit (Modulus of Resilience), kJ/m3 150 to 170
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22 to 23
22
Strength to Weight: Bending, points 21
21
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 14 to 15
14

Alloy Composition

Carbon (C), % 0.030 to 0.080
0 to 0.080
Chromium (Cr), % 18 to 19
16.5 to 18.5
Copper (Cu), % 1.3 to 2.0
0
Iron (Fe), % 67.4 to 73.6
61.4 to 71
Manganese (Mn), % 1.5 to 4.0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 5.5 to 6.9
10.5 to 13.5
Niobium (Nb), % 0
0 to 1.0
Nitrogen (N), % 0.030 to 0.11
0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015