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EN 1.4424 Stainless Steel vs. AISI 317 Stainless Steel

Both EN 1.4424 stainless steel and AISI 317 stainless steel are iron alloys. They have a moderately high 91% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4424 stainless steel and the bottom bar is AISI 317 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
170 to 220
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 28
35 to 55
Fatigue Strength, MPa 350 to 370
250 to 330
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 78
79
Shear Strength, MPa 520
420 to 470
Tensile Strength: Ultimate (UTS), MPa 800
580 to 710
Tensile Strength: Yield (Proof), MPa 480 to 500
250 to 420

Thermal Properties

Latent Heat of Fusion, J/g 310
290
Maximum Temperature: Corrosion, °C 420
420
Maximum Temperature: Mechanical, °C 960
590
Melting Completion (Liquidus), °C 1430
1400
Melting Onset (Solidus), °C 1390
1380
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 13
15
Thermal Expansion, µm/m-K 12
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.3
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.6

Otherwise Unclassified Properties

Base Metal Price, % relative 15
21
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 3.4
4.3
Embodied Energy, MJ/kg 46
59
Embodied Water, L/kg 140
160

Common Calculations

PREN (Pitting Resistance) 29
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 190 to 200
210 to 260
Resilience: Unit (Modulus of Resilience), kJ/m3 580 to 640
150 to 430
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 29
20 to 25
Strength to Weight: Bending, points 25
20 to 22
Thermal Diffusivity, mm2/s 3.5
4.1
Thermal Shock Resistance, points 23
12 to 15

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 18 to 19
18 to 20
Iron (Fe), % 68.6 to 72.4
58 to 68
Manganese (Mn), % 1.2 to 2.0
0 to 2.0
Molybdenum (Mo), % 2.5 to 3.0
3.0 to 4.0
Nickel (Ni), % 4.5 to 5.2
11 to 15
Nitrogen (N), % 0.050 to 0.1
0 to 0.1
Phosphorus (P), % 0 to 0.035
0 to 0.045
Silicon (Si), % 1.4 to 2.0
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030

Comparable Variants