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EN 1.4594 Stainless Steel vs. EN 1.4568 Stainless Steel

Both EN 1.4594 stainless steel and EN 1.4568 stainless steel are iron alloys. They have a moderately high 94% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4594 stainless steel and the bottom bar is EN 1.4568 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11 to 17
2.3 to 21
Fatigue Strength, MPa 490 to 620
220 to 670
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
76
Shear Strength, MPa 620 to 700
520 to 930
Tensile Strength: Ultimate (UTS), MPa 1020 to 1170
830 to 1620
Tensile Strength: Yield (Proof), MPa 810 to 1140
330 to 1490

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 450
410
Maximum Temperature: Mechanical, °C 820
890
Melting Completion (Liquidus), °C 1450
1420
Melting Onset (Solidus), °C 1410
1380
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
16
Thermal Expansion, µm/m-K 11
13

Electrical Properties

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

Otherwise Unclassified Properties

Base Metal Price, % relative 15
13
Density, g/cm3 7.9
7.7
Embodied Carbon, kg CO2/kg material 3.2
2.8
Embodied Energy, MJ/kg 45
40
Embodied Water, L/kg 130
140

Common Calculations

PREN (Pitting Resistance) 19
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
36 to 140
Resilience: Unit (Modulus of Resilience), kJ/m3 1660 to 3320
290 to 5710
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 36 to 41
30 to 58
Strength to Weight: Bending, points 29 to 31
25 to 40
Thermal Diffusivity, mm2/s 4.4
4.3
Thermal Shock Resistance, points 34 to 39
23 to 46

Alloy Composition

Aluminum (Al), % 0
0.7 to 1.5
Carbon (C), % 0 to 0.070
0 to 0.090
Chromium (Cr), % 13 to 15
16 to 18
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 72.6 to 79.5
70.9 to 76.8
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 1.2 to 2.0
0
Nickel (Ni), % 5.0 to 6.0
6.5 to 7.8
Niobium (Nb), % 0.15 to 0.6
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 0.7
0 to 0.7
Sulfur (S), % 0 to 0.015
0 to 0.015

Comparable Variants