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EN 1.4438 Stainless Steel vs. EN 1.4589 Stainless Steel

Both EN 1.4438 stainless steel and EN 1.4589 stainless steel are iron alloys. They have 80% 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 1.4438 stainless steel and the bottom bar is EN 1.4589 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 41
17
Fatigue Strength, MPa 220
260
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
77
Shear Strength, MPa 420
400
Tensile Strength: Ultimate (UTS), MPa 620
650
Tensile Strength: Yield (Proof), MPa 250
440

Thermal Properties

Latent Heat of Fusion, J/g 290
280
Maximum Temperature: Corrosion, °C 420
470
Maximum Temperature: Mechanical, °C 1000
810
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1400
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
25
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 22
9.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 4.4
2.4
Embodied Energy, MJ/kg 60
34
Embodied Water, L/kg 160
110

Common Calculations

PREN (Pitting Resistance) 31
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
96
Resilience: Unit (Modulus of Resilience), kJ/m3 150
490
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
23
Strength to Weight: Bending, points 20
22
Thermal Diffusivity, mm2/s 3.7
6.7
Thermal Shock Resistance, points 14
23

Alloy Composition

Carbon (C), % 0 to 0.030
0 to 0.080
Chromium (Cr), % 17.5 to 19.5
13.5 to 15.5
Iron (Fe), % 57.3 to 66.5
78.2 to 85
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 3.0 to 4.0
0.2 to 1.2
Nickel (Ni), % 13 to 16
1.0 to 2.5
Nitrogen (N), % 0 to 0.1
0
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 0.015
Titanium (Ti), % 0
0.3 to 0.5