409 Stainless Steel Alloy

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)