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EN 1.3549 Stainless Steel vs. EN 1.4594 Stainless Steel

Both EN 1.3549 stainless steel and EN 1.4594 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 26 material properties with values for both materials. Properties with values for just one material (7, in this case) are not shown.

For each property being compared, the top bar is EN 1.3549 stainless steel and the bottom bar is EN 1.4594 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Tensile Strength: Ultimate (UTS), MPa 730
1020 to 1170

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 400
450
Maximum Temperature: Mechanical, °C 910
820
Melting Completion (Liquidus), °C 1430
1450
Melting Onset (Solidus), °C 1390
1410
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 21
16
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.3
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.7
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
15
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 2.6
3.2
Embodied Energy, MJ/kg 37
45
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 22
19
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 27
36 to 41
Strength to Weight: Bending, points 24
29 to 31
Thermal Diffusivity, mm2/s 5.6
4.4
Thermal Shock Resistance, points 26
34 to 39

Alloy Composition

Carbon (C), % 0.85 to 1.0
0 to 0.070
Chromium (Cr), % 17 to 19
13 to 15
Copper (Cu), % 0
1.2 to 2.0
Iron (Fe), % 77.5 to 82
72.6 to 79.5
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.9 to 1.3
1.2 to 2.0
Nickel (Ni), % 0
5.0 to 6.0
Niobium (Nb), % 0
0.15 to 0.6
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 0.7
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0.070 to 0.12
0