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EN 1.4526 Stainless Steel vs. EN 1.4509 Stainless Steel

Both EN 1.4526 stainless steel and EN 1.4509 stainless steel are iron alloys. Both are furnished in the annealed condition. They have a very high 99% of their average alloy composition in common.

For each property being compared, the top bar is EN 1.4526 stainless steel and the bottom bar is EN 1.4509 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
180
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 25
21
Fatigue Strength, MPa 230
170
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 340
330
Tensile Strength: Ultimate (UTS), MPa 540
530
Tensile Strength: Yield (Proof), MPa 330
260

Thermal Properties

Latent Heat of Fusion, J/g 280
280
Maximum Temperature: Corrosion, °C 490
570
Maximum Temperature: Mechanical, °C 880
890
Melting Completion (Liquidus), °C 1450
1440
Melting Onset (Solidus), °C 1410
1400
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 30
25
Thermal Expansion, µm/m-K 10
10

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.5
2.9
Electrical Conductivity: Equal Weight (Specific), % IACS 2.9
3.4

Otherwise Unclassified Properties

Base Metal Price, % relative 13
13
Density, g/cm3 7.7
7.7
Embodied Carbon, kg CO2/kg material 2.9
2.8
Embodied Energy, MJ/kg 41
41
Embodied Water, L/kg 120
120

Common Calculations

PREN (Pitting Resistance) 21
18
Resilience: Ultimate (Unit Rupture Work), MJ/m3 120
90
Resilience: Unit (Modulus of Resilience), kJ/m3 280
180
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
19
Strength to Weight: Bending, points 19
19
Thermal Diffusivity, mm2/s 8.1
6.8
Thermal Shock Resistance, points 19
19

Alloy Composition

Carbon (C), % 0 to 0.080
0 to 0.030
Chromium (Cr), % 16 to 18
17.5 to 18.5
Iron (Fe), % 77.4 to 83.1
77.8 to 82.1
Manganese (Mn), % 0 to 1.0
0 to 1.0
Molybdenum (Mo), % 0.8 to 1.4
0
Niobium (Nb), % 0.1 to 1.0
0.3 to 1.0
Nitrogen (N), % 0 to 0.040
0
Phosphorus (P), % 0 to 0.040
0 to 0.040
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0
0.1 to 0.6