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EN 1.4422 Stainless Steel vs. EN 1.4749 Stainless Steel

Both EN 1.4422 stainless steel and EN 1.4749 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 32 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 1.4422 stainless steel and the bottom bar is EN 1.4749 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 17
16
Fatigue Strength, MPa 380
190
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 76
80
Shear Strength, MPa 520
370
Tensile Strength: Ultimate (UTS), MPa 850
600
Tensile Strength: Yield (Proof), MPa 630
320

Thermal Properties

Latent Heat of Fusion, J/g 270
300
Maximum Temperature: Corrosion, °C 390
450
Maximum Temperature: Mechanical, °C 760
1100
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
490
Thermal Conductivity, W/m-K 16
17
Thermal Expansion, µm/m-K 10
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.6
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 11
13
Density, g/cm3 7.9
7.6
Embodied Carbon, kg CO2/kg material 2.7
2.5
Embodied Energy, MJ/kg 37
36
Embodied Water, L/kg 110
160

Common Calculations

PREN (Pitting Resistance) 17
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 130
80
Resilience: Unit (Modulus of Resilience), kJ/m3 1000
250
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 30
22
Strength to Weight: Bending, points 25
21
Thermal Diffusivity, mm2/s 4.3
4.6
Thermal Shock Resistance, points 31
22

Alloy Composition

Carbon (C), % 0 to 0.020
0.15 to 0.2
Chromium (Cr), % 11 to 13
26 to 29
Copper (Cu), % 0.2 to 0.8
0
Iron (Fe), % 76.8 to 83.5
68.5 to 73.7
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 1.3 to 1.8
0
Nickel (Ni), % 4.0 to 5.0
0
Nitrogen (N), % 0 to 0.020
0.15 to 0.25
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.5
0 to 1.0
Sulfur (S), % 0 to 0.0030
0 to 0.015