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EN 1.4537 Stainless Steel vs. EN 1.4912 Stainless Steel

Both EN 1.4537 stainless steel and EN 1.4912 stainless steel are iron alloys. Both are furnished in the solution annealed (AT) condition. They have 71% 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 1.4912 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220
180
Elastic (Young's, Tensile) Modulus, GPa 210
200
Elongation at Break, % 42
40
Fatigue Strength, MPa 290
200
Impact Strength: V-Notched Charpy, J 91
90
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 80
77
Shear Strength, MPa 480
420
Tensile Strength: Ultimate (UTS), MPa 700
610
Tensile Strength: Yield (Proof), MPa 330
230

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 450
520
Maximum Temperature: Mechanical, °C 1100
940
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
16
Thermal Expansion, µm/m-K 16
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 34
20
Density, g/cm3 8.1
7.8
Embodied Carbon, kg CO2/kg material 6.1
3.8
Embodied Energy, MJ/kg 84
55
Embodied Water, L/kg 220
140

Common Calculations

PREN (Pitting Resistance) 46
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 240
190
Resilience: Unit (Modulus of Resilience), kJ/m3 270
130
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 24
25
Strength to Weight: Axial, points 24
22
Strength to Weight: Bending, points 22
20
Thermal Diffusivity, mm2/s 3.7
4.2
Thermal Shock Resistance, points 15
14

Alloy Composition

Carbon (C), % 0 to 0.020
0.040 to 0.1
Chromium (Cr), % 24 to 26
17 to 19
Copper (Cu), % 1.0 to 2.0
0
Iron (Fe), % 36.3 to 46.1
64.6 to 73.6
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 4.7 to 5.7
0
Nickel (Ni), % 24 to 27
9.0 to 12
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0.17 to 0.25
0
Phosphorus (P), % 0 to 0.030
0 to 0.045
Silicon (Si), % 0 to 0.7
0 to 1.0
Sulfur (S), % 0 to 0.010
0 to 0.015