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EN 1.4122 Stainless Steel vs. EN 1.4859 Stainless Steel

Both EN 1.4122 stainless steel and EN 1.4859 stainless steel are iron alloys. They have 63% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (2, in this case) are not shown.

For each property being compared, the top bar is EN 1.4122 stainless steel and the bottom bar is EN 1.4859 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 14
23
Fatigue Strength, MPa 260 to 360
140
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 790 to 850
490
Tensile Strength: Yield (Proof), MPa 450 to 630
210

Thermal Properties

Latent Heat of Fusion, J/g 280
310
Maximum Temperature: Corrosion, °C 400
560
Maximum Temperature: Mechanical, °C 870
1050
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1360
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 15
13
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
1.7
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
1.9

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
36
Density, g/cm3 7.7
8.0
Embodied Carbon, kg CO2/kg material 2.4
6.2
Embodied Energy, MJ/kg 33
88
Embodied Water, L/kg 120
190

Common Calculations

PREN (Pitting Resistance) 20
21
Resilience: Ultimate (Unit Rupture Work), MJ/m3 93 to 110
91
Resilience: Unit (Modulus of Resilience), kJ/m3 520 to 1000
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
24
Strength to Weight: Axial, points 28 to 31
17
Strength to Weight: Bending, points 25 to 26
17
Thermal Diffusivity, mm2/s 4.0
3.4
Thermal Shock Resistance, points 28 to 30
11

Alloy Composition

Carbon (C), % 0.33 to 0.45
0.050 to 0.15
Chromium (Cr), % 15.5 to 17.5
19 to 21
Iron (Fe), % 77.2 to 83.4
40.3 to 49
Manganese (Mn), % 0 to 1.5
0 to 2.0
Molybdenum (Mo), % 0.8 to 1.3
0 to 0.5
Nickel (Ni), % 0 to 1.0
31 to 33
Niobium (Nb), % 0
0.5 to 1.5
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0.5 to 1.5
Sulfur (S), % 0 to 0.015
0 to 0.030