UNS: S40910/S40920/S40930
EN-DIN: 1.4512
Printable PDF: 409 Stainless Steel Alloy Data sheet
409 Stainless is used when corrosion protection is needed beyond a carbon steel capacity. Applications include: Automotive, exhaust systems, and heat exchangers.
Nominal Composition
| C: | 0.030 max |
| Mn: | 1.0 max |
| P: | 0.040 max |
| S: | 0.020 max |
| Si: | 1.00 max |
| Cr: | 10.50 – 11.70 |
| Ni: | .50 max |
| N: | 0.030 max |
| Fe: | BAL |
Physical Properties
At 70°F (At 20°C)
Density
0.280 lb./in3 / (7.75 g/cm3)
Modulus of Elasticity (E)
30.2 x 103 ksi / (208.22 x 103MPa)
Electrical Resistivity
24 μ ohm.in / (60 μ ohm.cm)
Applicable Specifications
ASTM A240
Typical Mechanical Properties – Typical Room Temperature Mechanical Properties
Typical mechanical properties are based on ASTM A240
Condition
Annealed (Min)
Tensile Strength Min (UTS)
55 ksi (380 MPa)
0.2% YS Min
25 ksi (170 MPa)
Elongation% in 2” Min (50.8 mm)
20%
Hardness Rockwell
88 HRBW (Max)
