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EN 1.4421 Stainless Steel vs. AISI 317LMN Stainless Steel

Both EN 1.4421 stainless steel and AISI 317LMN stainless steel are iron alloys. They have 82% of their average alloy composition in common. There are 31 material properties with values for both materials. Properties with values for just one material (5, in this case) are not shown.

For each property being compared, the top bar is EN 1.4421 stainless steel and the bottom bar is AISI 317LMN stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11 to 17
45
Fatigue Strength, MPa 380 to 520
250
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
79
Tensile Strength: Ultimate (UTS), MPa 880 to 1100
620
Tensile Strength: Yield (Proof), MPa 620 to 950
270

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
420
Maximum Temperature: Mechanical, °C 870
1020
Melting Completion (Liquidus), °C 1440
1460
Melting Onset (Solidus), °C 1400
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 16
14
Thermal Expansion, µm/m-K 10
16

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 12
24
Density, g/cm3 7.8
8.0
Embodied Carbon, kg CO2/kg material 2.6
4.8
Embodied Energy, MJ/kg 36
65
Embodied Water, L/kg 130
170

Common Calculations

PREN (Pitting Resistance) 18
36
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 140
230
Resilience: Unit (Modulus of Resilience), kJ/m3 960 to 2270
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 39
22
Strength to Weight: Bending, points 26 to 30
20
Thermal Diffusivity, mm2/s 4.4
3.8
Thermal Shock Resistance, points 31 to 39
14

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 15.5 to 17.5
17 to 20
Iron (Fe), % 74.4 to 80.5
54.4 to 65.4
Manganese (Mn), % 0 to 1.0
0 to 2.0
Molybdenum (Mo), % 0 to 0.7
4.0 to 5.0
Nickel (Ni), % 4.0 to 5.5
13.5 to 17.5
Nitrogen (N), % 0
0.1 to 0.2
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 0 to 0.8
0 to 0.75
Sulfur (S), % 0 to 0.020
0 to 0.030