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EN 1.4309 Stainless Steel vs. EN 1.4855 Stainless Steel

Both EN 1.4309 stainless steel and EN 1.4855 stainless steel are iron alloys. They have 79% of their average alloy composition in common. There are 30 material properties with values for both materials. Properties with values for just one material (3, in this case) are not shown.

For each property being compared, the top bar is EN 1.4309 stainless steel and the bottom bar is EN 1.4855 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 140
150
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 34
4.6
Fatigue Strength, MPa 170
120
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 490
500
Tensile Strength: Yield (Proof), MPa 210
250

Thermal Properties

Latent Heat of Fusion, J/g 290
320
Maximum Temperature: Corrosion, °C 420
610
Maximum Temperature: Mechanical, °C 960
1050
Melting Completion (Liquidus), °C 1420
1400
Melting Onset (Solidus), °C 1380
1350
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 15
14
Thermal Expansion, µm/m-K 17
16

Otherwise Unclassified Properties

Base Metal Price, % relative 16
34
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.1
5.9
Embodied Energy, MJ/kg 45
85
Embodied Water, L/kg 150
200

Common Calculations

PREN (Pitting Resistance) 21
25
Resilience: Ultimate (Unit Rupture Work), MJ/m3 140
19
Resilience: Unit (Modulus of Resilience), kJ/m3 110
160
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 18
18
Strength to Weight: Bending, points 18
18
Thermal Diffusivity, mm2/s 4.1
3.7
Thermal Shock Resistance, points 11
11

Alloy Composition

Carbon (C), % 0 to 0.030
0.3 to 0.5
Chromium (Cr), % 18 to 20
23 to 25
Iron (Fe), % 64.2 to 73
42.6 to 51.9
Manganese (Mn), % 0 to 2.0
0 to 2.0
Molybdenum (Mo), % 0
0 to 0.5
Nickel (Ni), % 9.0 to 12
23 to 25
Niobium (Nb), % 0
0.8 to 1.8
Nitrogen (N), % 0 to 0.2
0
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 1.5
1.0 to 2.5
Sulfur (S), % 0 to 0.025
0 to 0.030