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EN 1.4421 Stainless Steel vs. AISI 204 Stainless Steel

Both EN 1.4421 stainless steel and AISI 204 stainless steel are iron alloys. They have a moderately high 92% of their average alloy composition in common. There are 31 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 1.4421 stainless steel and the bottom bar is AISI 204 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11 to 17
23 to 39
Fatigue Strength, MPa 380 to 520
320 to 720
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Tensile Strength: Ultimate (UTS), MPa 880 to 1100
730 to 1100
Tensile Strength: Yield (Proof), MPa 620 to 950
380 to 1080

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 410
410
Maximum Temperature: Mechanical, °C 870
850
Melting Completion (Liquidus), °C 1440
1410
Melting Onset (Solidus), °C 1400
1370
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
15
Thermal Expansion, µm/m-K 10
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.9

Otherwise Unclassified Properties

Base Metal Price, % relative 12
10
Density, g/cm3 7.8
7.7
Embodied Carbon, kg CO2/kg material 2.6
2.4
Embodied Energy, MJ/kg 36
35
Embodied Water, L/kg 130
130

Common Calculations

PREN (Pitting Resistance) 18
20
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120 to 140
240 to 250
Resilience: Unit (Modulus of Resilience), kJ/m3 960 to 2270
360 to 2940
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 31 to 39
27 to 40
Strength to Weight: Bending, points 26 to 30
24 to 31
Thermal Diffusivity, mm2/s 4.4
4.1
Thermal Shock Resistance, points 31 to 39
16 to 24

Alloy Composition

Carbon (C), % 0 to 0.060
0 to 0.030
Chromium (Cr), % 15.5 to 17.5
15 to 17
Iron (Fe), % 74.4 to 80.5
69.6 to 76.4
Manganese (Mn), % 0 to 1.0
7.0 to 9.0
Molybdenum (Mo), % 0 to 0.7
0
Nickel (Ni), % 4.0 to 5.5
1.5 to 3.0
Nitrogen (N), % 0
0.15 to 0.3
Phosphorus (P), % 0 to 0.035
0 to 0.040
Silicon (Si), % 0 to 0.8
0 to 1.0
Sulfur (S), % 0 to 0.020
0 to 0.030

Comparable Variants