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EN 1.4537 Stainless Steel vs. EN 1.4424 Stainless Steel

Both EN 1.4537 stainless steel and EN 1.4424 stainless steel are iron alloys. They have 69% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4537 stainless steel and the bottom bar is EN 1.4424 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
230
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 42
28
Fatigue Strength, MPa 290
350 to 370
Impact Strength: V-Notched Charpy, J 91
90 to 91
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
78
Shear Strength, MPa 480
520
Tensile Strength: Ultimate (UTS), MPa 700
800
Tensile Strength: Yield (Proof), MPa 330
480 to 500

Thermal Properties

Latent Heat of Fusion, J/g 310
310
Maximum Temperature: Corrosion, °C 450
420
Maximum Temperature: Mechanical, °C 1100
960
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1390
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
13
Thermal Expansion, µm/m-K 16
12

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 34
15
Density, g/cm3 8.1
7.7
Embodied Carbon, kg CO2/kg material 6.1
3.4
Embodied Energy, MJ/kg 84
46
Embodied Water, L/kg 220
140

Common Calculations

PREN (Pitting Resistance) 46
29
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
190 to 200
Resilience: Unit (Modulus of Resilience), kJ/m3 270
580 to 640
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
29
Strength to Weight: Bending, points 22
25
Thermal Diffusivity, mm2/s 3.7
3.5
Thermal Shock Resistance, points 15
23

Alloy Composition

Carbon (C), % 0 to 0.020
0 to 0.030
Chromium (Cr), % 24 to 26
18 to 19
Copper (Cu), % 1.0 to 2.0
0
Iron (Fe), % 36.3 to 46.1
68.6 to 72.4
Manganese (Mn), % 0 to 2.0
1.2 to 2.0
Molybdenum (Mo), % 4.7 to 5.7
2.5 to 3.0
Nickel (Ni), % 24 to 27
4.5 to 5.2
Nitrogen (N), % 0.17 to 0.25
0.050 to 0.1
Phosphorus (P), % 0 to 0.030
0 to 0.035
Silicon (Si), % 0 to 0.7
1.4 to 2.0
Sulfur (S), % 0 to 0.010
0 to 0.015