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EN 1.4371 Stainless Steel vs. AISI 446 Stainless Steel

Both EN 1.4371 stainless steel and AISI 446 stainless steel are iron alloys. They have 89% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4371 stainless steel and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 230
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 45 to 51
23
Fatigue Strength, MPa 290 to 340
200
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 520 to 540
360
Tensile Strength: Ultimate (UTS), MPa 740 to 750
570
Tensile Strength: Yield (Proof), MPa 320 to 340
300

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 880
1180
Melting Completion (Liquidus), °C 1410
1510
Melting Onset (Solidus), °C 1370
1430
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 17
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 12
12
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.4
Embodied Energy, MJ/kg 38
35
Embodied Water, L/kg 140
150

Common Calculations

PREN (Pitting Resistance) 20
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270 to 310
110
Resilience: Unit (Modulus of Resilience), kJ/m3 250 to 300
230
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 27
21
Strength to Weight: Bending, points 24
20
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 16
19

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.2
Chromium (Cr), % 16 to 17.5
23 to 27
Copper (Cu), % 0 to 1.0
0
Iron (Fe), % 66.7 to 74.4
69.2 to 77
Manganese (Mn), % 6.0 to 8.0
0 to 1.5
Nickel (Ni), % 3.5 to 5.5
0 to 0.75
Nitrogen (N), % 0.15 to 0.25
0 to 0.25
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.030