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EN 1.4570 Stainless Steel vs. EN 1.4451 Stainless Steel

Both EN 1.4570 stainless steel and EN 1.4451 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 88% of their average alloy composition in common. There are 32 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 1.4570 stainless steel and the bottom bar is EN 1.4451 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
25
Fatigue Strength, MPa 180
370
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Tensile Strength: Ultimate (UTS), MPa 610
750
Tensile Strength: Yield (Proof), MPa 210
540

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 930
1100
Melting Completion (Liquidus), °C 1420
1430
Melting Onset (Solidus), °C 1370
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 15
20
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.1
3.8
Embodied Energy, MJ/kg 43
53
Embodied Water, L/kg 150
190

Common Calculations

PREN (Pitting Resistance) 20
39
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
170
Resilience: Unit (Modulus of Resilience), kJ/m3 110
710
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
27
Strength to Weight: Bending, points 20
23
Thermal Diffusivity, mm2/s 4.0
4.5
Thermal Shock Resistance, points 14
16

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 17 to 19
25 to 27
Copper (Cu), % 1.4 to 1.8
2.8 to 3.5
Iron (Fe), % 65 to 73.5
56.2 to 64.6
Manganese (Mn), % 0 to 2.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.6
2.5 to 3.5
Nickel (Ni), % 8.0 to 10
5.0 to 7.0
Nitrogen (N), % 0 to 0.1
0.12 to 0.22
Phosphorus (P), % 0 to 0.045
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0.15 to 0.35
0 to 0.025