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EN 1.4374 Stainless Steel vs. EN 1.4749 Stainless Steel

Both EN 1.4374 stainless steel and EN 1.4749 stainless steel are iron alloys. They have 85% 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 1.4374 stainless steel and the bottom bar is EN 1.4749 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 230
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 40
16
Fatigue Strength, MPa 340
190
Poisson's Ratio 0.28
0.27
Shear Modulus, GPa 77
80
Shear Strength, MPa 550
370
Tensile Strength: Ultimate (UTS), MPa 800
600
Tensile Strength: Yield (Proof), MPa 400
320

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 410
450
Maximum Temperature: Mechanical, °C 920
1100
Melting Completion (Liquidus), °C 1400
1420
Melting Onset (Solidus), °C 1360
1380
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 15
17
Thermal Expansion, µm/m-K 17
9.6

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.5
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 14
13
Density, g/cm3 7.7
7.6
Embodied Carbon, kg CO2/kg material 2.9
2.5
Embodied Energy, MJ/kg 42
36
Embodied Water, L/kg 150
160

Common Calculations

PREN (Pitting Resistance) 23
31
Resilience: Ultimate (Unit Rupture Work), MJ/m3 270
80
Resilience: Unit (Modulus of Resilience), kJ/m3 400
250
Stiffness to Weight: Axial, points 14
15
Stiffness to Weight: Bending, points 25
26
Strength to Weight: Axial, points 29
22
Strength to Weight: Bending, points 25
21
Thermal Diffusivity, mm2/s 4.0
4.6
Thermal Shock Resistance, points 17
22

Alloy Composition

Carbon (C), % 0.050 to 0.1
0.15 to 0.2
Chromium (Cr), % 17.5 to 18.5
26 to 29
Copper (Cu), % 0 to 0.4
0
Iron (Fe), % 63.5 to 67.9
68.5 to 73.7
Manganese (Mn), % 9.0 to 10
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 5.0 to 6.0
0
Nitrogen (N), % 0.25 to 0.32
0.15 to 0.25
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0.3 to 0.6
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015