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EN 1.4438 Stainless Steel vs. EN 1.4034 Stainless Steel

Both EN 1.4438 stainless steel and EN 1.4034 stainless steel are iron alloys. They have 76% 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 1.4034 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 41
11 to 14
Fatigue Strength, MPa 220
230 to 400
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 79
76
Shear Strength, MPa 420
420 to 540
Tensile Strength: Ultimate (UTS), MPa 620
690 to 900
Tensile Strength: Yield (Proof), MPa 250
390 to 730

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 420
390
Maximum Temperature: Mechanical, °C 1000
770
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 14
30
Thermal Expansion, µm/m-K 16
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.0
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 2.3
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 22
7.0
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 4.4
2.0
Embodied Energy, MJ/kg 60
27
Embodied Water, L/kg 160
100

Common Calculations

PREN (Pitting Resistance) 31
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 200
81 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 150
400 to 1370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 22
25 to 32
Strength to Weight: Bending, points 20
22 to 27
Thermal Diffusivity, mm2/s 3.7
8.1
Thermal Shock Resistance, points 14
24 to 32

Alloy Composition

Carbon (C), % 0 to 0.030
0.43 to 0.5
Chromium (Cr), % 17.5 to 19.5
12.5 to 14.5
Iron (Fe), % 57.3 to 66.5
83 to 87.1
Manganese (Mn), % 0 to 2.0
0 to 1.0
Molybdenum (Mo), % 3.0 to 4.0
0
Nickel (Ni), % 13 to 16
0
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