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EN 1.4630 Stainless Steel vs. EN 1.4818 Stainless Steel

Both EN 1.4630 stainless steel and EN 1.4818 stainless steel are iron alloys. They have 85% of their average alloy composition in common. There are 32 material properties with values for both materials. Properties with values for just one material (1, in this case) are not shown.

For each property being compared, the top bar is EN 1.4630 stainless steel and the bottom bar is EN 1.4818 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 190
200
Elongation at Break, % 23
40
Fatigue Strength, MPa 170
280
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 300
480
Tensile Strength: Ultimate (UTS), MPa 480
700
Tensile Strength: Yield (Proof), MPa 250
330

Thermal Properties

Latent Heat of Fusion, J/g 290
300
Maximum Temperature: Corrosion, °C 520
420
Maximum Temperature: Mechanical, °C 800
1050
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1390
1370
Specific Heat Capacity, J/kg-K 480
490
Thermal Conductivity, W/m-K 28
17
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.8
2.0
Electrical Conductivity: Equal Weight (Specific), % IACS 3.3
2.4

Otherwise Unclassified Properties

Base Metal Price, % relative 9.5
16
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.5
3.1
Embodied Energy, MJ/kg 36
44
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 15
22
Resilience: Ultimate (Unit Rupture Work), MJ/m3 92
230
Resilience: Unit (Modulus of Resilience), kJ/m3 160
270
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 17
25
Strength to Weight: Bending, points 18
23
Thermal Diffusivity, mm2/s 7.5
4.5
Thermal Shock Resistance, points 17
15

Alloy Composition

Aluminum (Al), % 0 to 1.5
0
Carbon (C), % 0 to 0.030
0.040 to 0.080
Cerium (Ce), % 0
0.030 to 0.080
Chromium (Cr), % 13 to 16
18 to 20
Copper (Cu), % 0 to 0.5
0
Iron (Fe), % 77.1 to 86.7
65.6 to 71.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0 to 0.5
0
Nickel (Ni), % 0 to 0.5
9.0 to 11
Niobium (Nb), % 0 to 0.5
0
Nitrogen (N), % 0
0.12 to 0.2
Phosphorus (P), % 0 to 0.050
0 to 0.045
Silicon (Si), % 0.2 to 1.5
1.0 to 2.0
Sulfur (S), % 0 to 0.050
0 to 0.015
Titanium (Ti), % 0.15 to 0.8
0