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EN 1.4303 Stainless Steel vs. AISI 446 Stainless Steel

Both EN 1.4303 stainless steel and AISI 446 stainless steel are iron alloys. They have 88% of their average alloy composition in common. There are 33 material properties with values for both materials. Properties with values for just one material (4, in this case) are not shown.

For each property being compared, the top bar is EN 1.4303 stainless steel and the bottom bar is AISI 446 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 190 to 270
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 13 to 49
23
Fatigue Strength, MPa 220 to 320
200
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
79
Shear Strength, MPa 420 to 540
360
Tensile Strength: Ultimate (UTS), MPa 590 to 900
570
Tensile Strength: Yield (Proof), MPa 230 to 560
300

Thermal Properties

Latent Heat of Fusion, J/g 290
290
Maximum Temperature: Corrosion, °C 410
440
Maximum Temperature: Mechanical, °C 940
1180
Melting Completion (Liquidus), °C 1420
1510
Melting Onset (Solidus), °C 1380
1430
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
1.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.3

Otherwise Unclassified Properties

Base Metal Price, % relative 17
12
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 3.2
2.4
Embodied Energy, MJ/kg 46
35
Embodied Water, L/kg 150
150

Common Calculations

PREN (Pitting Resistance) 19
27
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 230
110
Resilience: Unit (Modulus of Resilience), kJ/m3 140 to 800
230
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 21 to 32
21
Strength to Weight: Bending, points 20 to 26
20
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 13 to 20
19

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.2
Chromium (Cr), % 17 to 19
23 to 27
Iron (Fe), % 64.8 to 72
69.2 to 77
Manganese (Mn), % 0 to 2.0
0 to 1.5
Nickel (Ni), % 11 to 13
0 to 0.75
Nitrogen (N), % 0 to 0.1
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