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EN 1.4634 Stainless Steel vs. EN 1.4006 Stainless Steel

Both EN 1.4634 stainless steel and EN 1.4006 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4634 stainless steel and the bottom bar is EN 1.4006 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 21
16 to 23
Fatigue Strength, MPa 180
150 to 300
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 340
370 to 460
Tensile Strength: Ultimate (UTS), MPa 540
590 to 750
Tensile Strength: Yield (Proof), MPa 280
230 to 510

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 500
390
Maximum Temperature: Mechanical, °C 900
740
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1390
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 21
30
Thermal Expansion, µm/m-K 10
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 3.0
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 13
7.0
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.9
1.9
Embodied Energy, MJ/kg 42
27
Embodied Water, L/kg 140
100

Common Calculations

PREN (Pitting Resistance) 19
13
Resilience: Ultimate (Unit Rupture Work), MJ/m3 93
99 to 110
Resilience: Unit (Modulus of Resilience), kJ/m3 200
140 to 660
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 20
21 to 27
Strength to Weight: Bending, points 19
20 to 24
Thermal Diffusivity, mm2/s 5.8
8.1
Thermal Shock Resistance, points 19
21 to 26

Alloy Composition

Aluminum (Al), % 0.2 to 1.5
0
Carbon (C), % 0 to 0.030
0.080 to 0.15
Chromium (Cr), % 17.5 to 18.5
11.5 to 13.5
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 74.9 to 81.8
83.1 to 88.4
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.5
0 to 0.75
Niobium (Nb), % 0.3 to 1.0
0
Phosphorus (P), % 0 to 0.050
0 to 0.040
Silicon (Si), % 0.2 to 1.5
0 to 1.0
Sulfur (S), % 0 to 0.050
0 to 0.015