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EN 1.4594 Stainless Steel vs. EN 1.4589 Stainless Steel

Both EN 1.4594 stainless steel and EN 1.4589 stainless steel are iron alloys. They have a moderately high 93% 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 1.4589 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 11 to 17
17
Fatigue Strength, MPa 490 to 620
260
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 76
77
Shear Strength, MPa 620 to 700
400
Tensile Strength: Ultimate (UTS), MPa 1020 to 1170
650
Tensile Strength: Yield (Proof), MPa 810 to 1140
440

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 450
470
Maximum Temperature: Mechanical, °C 820
810
Melting Completion (Liquidus), °C 1450
1450
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 470
480
Thermal Conductivity, W/m-K 16
25
Thermal Expansion, µm/m-K 11
11

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.2
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.5
3.3

Otherwise Unclassified Properties

Base Metal Price, % relative 15
9.5
Density, g/cm3 7.9
7.8
Embodied Carbon, kg CO2/kg material 3.2
2.4
Embodied Energy, MJ/kg 45
34
Embodied Water, L/kg 130
110

Common Calculations

PREN (Pitting Resistance) 19
17
Resilience: Ultimate (Unit Rupture Work), MJ/m3 110 to 190
96
Resilience: Unit (Modulus of Resilience), kJ/m3 1660 to 3320
490
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 36 to 41
23
Strength to Weight: Bending, points 29 to 31
22
Thermal Diffusivity, mm2/s 4.4
6.7
Thermal Shock Resistance, points 34 to 39
23

Alloy Composition

Carbon (C), % 0 to 0.070
0 to 0.080
Chromium (Cr), % 13 to 15
13.5 to 15.5
Copper (Cu), % 1.2 to 2.0
0
Iron (Fe), % 72.6 to 79.5
78.2 to 85
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 1.2 to 2.0
0.2 to 1.2
Nickel (Ni), % 5.0 to 6.0
1.0 to 2.5
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 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0
0.3 to 0.5