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EN 1.4570 Stainless Steel vs. EN 1.4371 Stainless Steel

Both EN 1.4570 stainless steel and EN 1.4371 stainless steel are iron alloys. They have a moderately high 93% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4570 stainless steel and the bottom bar is EN 1.4371 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190
220 to 230
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
45 to 51
Fatigue Strength, MPa 180
290 to 340
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 410
520 to 540
Tensile Strength: Ultimate (UTS), MPa 610
740 to 750
Tensile Strength: Yield (Proof), MPa 210
320 to 340

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 930
880
Melting Completion (Liquidus), °C 1420
1410
Melting Onset (Solidus), °C 1370
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
15
Thermal Expansion, µm/m-K 16
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 15
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.1
2.6
Embodied Energy, MJ/kg 43
38
Embodied Water, L/kg 150
140

Common Calculations

PREN (Pitting Resistance) 20
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190
270 to 310
Resilience: Unit (Modulus of Resilience), kJ/m3 110
250 to 300
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
24
Thermal Diffusivity, mm2/s 4.0
4.0
Thermal Shock Resistance, points 14
16

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 17 to 19
16 to 17.5
Copper (Cu), % 1.4 to 1.8
0 to 1.0
Iron (Fe), % 65 to 73.5
66.7 to 74.4
Manganese (Mn), % 0 to 2.0
6.0 to 8.0
Molybdenum (Mo), % 0 to 0.6
0
Nickel (Ni), % 8.0 to 10
3.5 to 5.5
Nitrogen (N), % 0 to 0.1
0.15 to 0.25
Phosphorus (P), % 0 to 0.045
0 to 0.045
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0.15 to 0.35
0 to 0.015