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EN 1.4912 Stainless Steel vs. EN 1.4580 Stainless Steel

Both EN 1.4912 stainless steel and EN 1.4580 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have a very high 96% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4912 stainless steel and the bottom bar is EN 1.4580 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
200
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
40
Fatigue Strength, MPa 200
210
Impact Strength: V-Notched Charpy, J 90
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
78
Shear Strength, MPa 420
430
Tensile Strength: Ultimate (UTS), MPa 610
620
Tensile Strength: Yield (Proof), MPa 230
250

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 520
480
Maximum Temperature: Mechanical, °C 940
950
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
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 20
22
Density, g/cm3 7.8
7.9
Embodied Carbon, kg CO2/kg material 3.8
4.3
Embodied Energy, MJ/kg 55
60
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 18
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
200
Resilience: Unit (Modulus of Resilience), kJ/m3 130
150
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
22
Strength to Weight: Bending, points 20
21
Thermal Diffusivity, mm2/s 4.2
4.0
Thermal Shock Resistance, points 14
14

Alloy Composition

Carbon (C), % 0.040 to 0.1
0 to 0.080
Chromium (Cr), % 17 to 19
16.5 to 18.5
Iron (Fe), % 64.6 to 73.6
61.4 to 71
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
2.0 to 2.5
Nickel (Ni), % 9.0 to 12
10.5 to 13.5
Niobium (Nb), % 0.4 to 1.2
0 to 1.0
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015