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EN 1.4512 Stainless Steel vs. EN 1.4122 Stainless Steel

Both EN 1.4512 stainless steel and EN 1.4122 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 1.4512 stainless steel and the bottom bar is EN 1.4122 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 28
14
Fatigue Strength, MPa 180
260 to 360
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 310
480 to 520
Tensile Strength: Ultimate (UTS), MPa 470
790 to 850
Tensile Strength: Yield (Proof), MPa 240
450 to 630

Thermal Properties

Latent Heat of Fusion, J/g 270
280
Maximum Temperature: Corrosion, °C 440
400
Maximum Temperature: Mechanical, °C 720
870
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
15
Thermal Expansion, µm/m-K 11
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 6.5
9.5
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.0
2.4
Embodied Energy, MJ/kg 27
33
Embodied Water, L/kg 95
120

Common Calculations

PREN (Pitting Resistance) 12
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110
93 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 150
520 to 1000
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
28 to 31
Strength to Weight: Bending, points 17
25 to 26
Thermal Diffusivity, mm2/s 6.7
4.0
Thermal Shock Resistance, points 17
28 to 30

Alloy Composition

Carbon (C), % 0 to 0.030
0.33 to 0.45
Chromium (Cr), % 10.5 to 12.5
15.5 to 17.5
Iron (Fe), % 84.8 to 89.5
77.2 to 83.4
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0
0.8 to 1.3
Nickel (Ni), % 0
0 to 1.0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0 to 0.65
0