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EN 1.4123 Stainless Steel vs. EN 1.4988 Stainless Steel

Both EN 1.4123 stainless steel and EN 1.4988 stainless steel are iron alloys. They have 84% of their average alloy composition in common. There are 27 material properties with values for both materials. Properties with values for just one material (6, in this case) are not shown.

For each property being compared, the top bar is EN 1.4123 stainless steel and the bottom bar is EN 1.4988 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 220 to 250
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 720 to 810
640

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 390
520
Maximum Temperature: Mechanical, °C 840
920
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
470
Thermal Conductivity, W/m-K 23
15
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.2
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
2.5

Otherwise Unclassified Properties

Base Metal Price, % relative 10
23
Density, g/cm3 7.7
7.9
Embodied Carbon, kg CO2/kg material 4.2
6.0
Embodied Energy, MJ/kg 62
89
Embodied Water, L/kg 120
150

Common Calculations

PREN (Pitting Resistance) 24
22
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 26 to 29
23
Strength to Weight: Bending, points 23 to 25
21
Thermal Diffusivity, mm2/s 6.3
4.0
Thermal Shock Resistance, points 26 to 29
14

Alloy Composition

Carbon (C), % 0.35 to 0.5
0.040 to 0.1
Chromium (Cr), % 14 to 16.5
15.5 to 17.5
Iron (Fe), % 76.7 to 84.6
62.1 to 69.5
Manganese (Mn), % 0 to 1.0
0 to 1.5
Molybdenum (Mo), % 1.0 to 2.5
1.1 to 1.5
Nickel (Ni), % 0 to 0.5
12.5 to 14.5
Niobium (Nb), % 0
0.4 to 1.2
Nitrogen (N), % 0.1 to 0.3
0.060 to 0.14
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0.3 to 0.6
Sulfur (S), % 0 to 0.030
0 to 0.015
Vanadium (V), % 0 to 1.5
0.6 to 0.85