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EN 1.4568 Stainless Steel vs. AISI 321 Stainless Steel

Both EN 1.4568 stainless steel and AISI 321 stainless steel are iron alloys. They have a moderately high 95% 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 1.4568 stainless steel and the bottom bar is AISI 321 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 2.3 to 21
34 to 50
Fatigue Strength, MPa 220 to 670
220 to 270
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 520 to 930
420 to 460
Tensile Strength: Ultimate (UTS), MPa 830 to 1620
590 to 690
Tensile Strength: Yield (Proof), MPa 330 to 1490
220 to 350

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 410
480
Maximum Temperature: Mechanical, °C 890
870
Melting Completion (Liquidus), °C 1420
1430
Melting Onset (Solidus), °C 1380
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 13
17

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
2.7

Otherwise Unclassified Properties

Base Metal Price, % relative 13
16
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.2
Embodied Energy, MJ/kg 40
45
Embodied Water, L/kg 140
140

Common Calculations

PREN (Pitting Resistance) 17
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 36 to 140
190 to 230
Resilience: Unit (Modulus of Resilience), kJ/m3 290 to 5710
130 to 310
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 30 to 58
21 to 25
Strength to Weight: Bending, points 25 to 40
20 to 22
Thermal Diffusivity, mm2/s 4.3
4.1
Thermal Shock Resistance, points 23 to 46
13 to 15

Alloy Composition

Aluminum (Al), % 0.7 to 1.5
0
Carbon (C), % 0 to 0.090
0 to 0.080
Chromium (Cr), % 16 to 18
17 to 19
Iron (Fe), % 70.9 to 76.8
65.3 to 74
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 6.5 to 7.8
9.0 to 12
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.045
Silicon (Si), % 0 to 0.7
0 to 0.75
Sulfur (S), % 0 to 0.015
0 to 0.030
Titanium (Ti), % 0
0 to 0.7