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EN 1.4509 Stainless Steel vs. EN 1.4948 Stainless Steel

Both EN 1.4509 stainless steel and EN 1.4948 stainless steel are iron alloys. They have 90% of their average alloy composition in common. There are 33 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 1.4509 stainless steel and the bottom bar is EN 1.4948 stainless steel.

Metric UnitsUS Customary Units

Mechanical Properties

Brinell Hardness 180
190
Elastic (Young's, Tensile) Modulus, GPa 200
200
Elongation at Break, % 21
48
Fatigue Strength, MPa 170
200
Poisson's Ratio 0.28
0.28
Shear Modulus, GPa 77
77
Shear Strength, MPa 330
430
Tensile Strength: Ultimate (UTS), MPa 530
610
Tensile Strength: Yield (Proof), MPa 260
210

Thermal Properties

Latent Heat of Fusion, J/g 280
290
Maximum Temperature: Corrosion, °C 570
410
Maximum Temperature: Mechanical, °C 890
930
Melting Completion (Liquidus), °C 1440
1430
Melting Onset (Solidus), °C 1400
1380
Specific Heat Capacity, J/kg-K 480
480
Thermal Conductivity, W/m-K 25
17
Thermal Expansion, µm/m-K 10
16

Electrical Properties

Electrical Conductivity: Equal Volume, % IACS 2.9
2.4
Electrical Conductivity: Equal Weight (Specific), % IACS 3.4
2.8

Otherwise Unclassified Properties

Base Metal Price, % relative 13
15
Density, g/cm3 7.7
7.8
Embodied Carbon, kg CO2/kg material 2.8
3.0
Embodied Energy, MJ/kg 41
43
Embodied Water, L/kg 120
140

Common Calculations

PREN (Pitting Resistance) 18
19
Resilience: Ultimate (Unit Rupture Work), MJ/m3 90
230
Resilience: Unit (Modulus of Resilience), kJ/m3 180
110
Stiffness to Weight: Axial, points 14
14
Stiffness to Weight: Bending, points 25
25
Strength to Weight: Axial, points 19
22
Strength to Weight: Bending, points 19
21
Thermal Diffusivity, mm2/s 6.8
4.5
Thermal Shock Resistance, points 19
14

Alloy Composition

Carbon (C), % 0 to 0.030
0.040 to 0.080
Chromium (Cr), % 17.5 to 18.5
17 to 19
Iron (Fe), % 77.8 to 82.1
66.8 to 75
Manganese (Mn), % 0 to 1.0
0 to 2.0
Nickel (Ni), % 0
8.0 to 11
Niobium (Nb), % 0.3 to 1.0
0
Nitrogen (N), % 0
0 to 0.1
Phosphorus (P), % 0 to 0.040
0 to 0.035
Silicon (Si), % 0 to 1.0
0 to 1.0
Sulfur (S), % 0 to 0.015
0 to 0.015
Titanium (Ti), % 0.1 to 0.6
0