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EN 1.4008 Stainless Steel vs. EN 1.4034 Stainless Steel

Both EN 1.4008 stainless steel and EN 1.4034 stainless steel are iron alloys. They have a very high 98% of their average alloy composition in common. There are 31 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 1.4008 stainless steel and the bottom bar is EN 1.4034 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
190
Elongation at Break, % 17
11 to 14
Fatigue Strength, MPa 300
230 to 400
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Tensile Strength: Ultimate (UTS), MPa 670
690 to 900
Tensile Strength: Yield (Proof), MPa 500
390 to 730

Thermal Properties

Latent Heat of Fusion, J/g 280
270
Maximum Temperature: Corrosion, °C 390
390
Maximum Temperature: Mechanical, °C 760
770
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1400
1390
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
30
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
3.1
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
3.7

Otherwise Unclassified Properties

Base Metal Price, % relative 8.0
7.0
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.1
2.0
Embodied Energy, MJ/kg 30
27
Embodied Water, L/kg 100
100

Common Calculations

PREN (Pitting Resistance) 14
14
Resilience: Ultimate (Unit Rupture Work), MJ/m3 100
81 to 94
Resilience: Unit (Modulus of Resilience), kJ/m3 630
400 to 1370
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 24
25 to 32
Strength to Weight: Bending, points 22
22 to 27
Thermal Diffusivity, mm2/s 6.7
8.1
Thermal Shock Resistance, points 23
24 to 32

Alloy Composition

Carbon (C), % 0 to 0.1
0.43 to 0.5
Chromium (Cr), % 12 to 13.5
12.5 to 14.5
Iron (Fe), % 81.8 to 86.8
83 to 87.1
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.2 to 0.5
0
Nickel (Ni), % 1.0 to 2.0
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.025
0 to 0.015