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EN 1.4325 Stainless Steel vs. EN 1.4003 Stainless Steel

Both EN 1.4325 stainless steel and EN 1.4003 stainless steel are iron alloys. They have 85% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4325 stainless steel and the bottom bar is EN 1.4003 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
180
Elastic (Young's, Tensile) Modulus, GPa 200
190
Elongation at Break, % 45
22
Fatigue Strength, MPa 190
210
Impact Strength: V-Notched Charpy, J 91
67
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
76
Shear Strength, MPa 450
340
Tensile Strength: Ultimate (UTS), MPa 650
540
Tensile Strength: Yield (Proof), MPa 210
320

Thermal Properties

Latent Heat of Fusion, J/g 290
270
Maximum Temperature: Corrosion, °C 410
390
Maximum Temperature: Mechanical, °C 930
720
Melting Completion (Liquidus), °C 1430
1440
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
25
Thermal Expansion, µm/m-K 16
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.4
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.8
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
6.5
Density, g/cm3 7.8
7.8
Embodied Carbon, kg CO2/kg material 3.0
1.9
Embodied Energy, MJ/kg 42
27
Embodied Water, L/kg 140
97

Common Calculations

PREN (Pitting Resistance) 18
12
Resilience: Ultimate (Unit Rupture Work), MJ/m3 230
100
Resilience: Unit (Modulus of Resilience), kJ/m3 110
260
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 23
19
Strength to Weight: Bending, points 21
19
Thermal Diffusivity, mm2/s 4.3
6.7
Thermal Shock Resistance, points 15
19

Alloy Composition

Carbon (C), % 0.030 to 0.15
0 to 0.030
Chromium (Cr), % 17 to 19
10.5 to 12.5
Iron (Fe), % 67.8 to 75
83.9 to 89.2
Manganese (Mn), % 0 to 2.0
0 to 1.5
Nickel (Ni), % 8.0 to 10
0.3 to 1.0
Nitrogen (N), % 0
0 to 0.030
Phosphorus (P), % 0 to 0.045
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.030
0 to 0.015