Listing ID #2961214
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Contact SupplierGrade 409 is a titanium stabilised ferritic stainless steel. Although regarded as a general-purpose chromium stainless steel the primary application for Grade 409 is automotive exhaust systems.
Its applications are those where appearance is a secondary consideration to mechanical properties. Grade 409 resists atmospheric and exhaust gas corrosion. A light surface rust will form in moist atmospheres; this rust retards further corrosion but makes the surface undesirable for decorative applications. The corrosion resistance is about the same as that of 3CR12 and the 12% chromium martensitic grades such as 410, and inferior to the 17% chromium grade 430. Generally 409 is classified as resistant to scaling in intermittent service up to 815°C and up to 675°C in continuous service, but these temperatures are dependent upon the exact service environment. Annealing - heat to 790-900°C and air cool. This grade cannot be hardened by thermal treatment. More highly stabilised versions of 409 are useful where 409 has been proven marginal - these grades S40910, S40920 and S40930 are stabilised with titanium, niobium or both titanium and niobium
Applications :
Details :
Material Suitable For | Material Not Suitable For |
---|---|
Automotive Exhaust System | Decorative Application |
Moderate Corrosion Resistance | Cannot Be Harden |
High Strength | High Reactive Chemicals |
Tempreture Range upto 815 Degree Celsius |
AISI (USA) |
409 |
---|---|
AFNOR(FRANCE) |
Z 3 CT 12 |
DIN 17006 (GERMANY) |
X2 CrTi 12 |
W.N 17007(GERMANY) |
1.4512 |
UNI (ITALY) |
- |
JIS (JAPAN) |
SUS 409 |
GOST(RUSSIA) |
- |
UNE (SPAIN) |
|
SIS (SWEDEN) |
- |
BSI (UK) |
- |
EURONORM (EUROPEAN UNION) |
- |
UNS |
S17400 |
C | Si | Mn | P max | S | N | Cr | Mo | Ni | Others |
---|---|---|---|---|---|---|---|---|---|
≤0,030 | ≤1,00 | ≤1,00 | 0.040 | ≤0,015 | 10,50 - 12,50 | - | - | Ti: min: (6x(C+N)); max: 0,65 |
DENSITY | MODULUS OF ELASTICITY | MEAN COEFFICIENT OF THERMAL EXPANSION | THERMAL CONDUCTIVITY | SPECIFIC HEAT | ELECTRICAL RESISTIVITY | |
---|---|---|---|---|---|---|
at 20oC | at 20oC | [10-6*1/K] | at 20oC | at 20oC | at 20oC | |
[kg/dm3] | [kN/mm2] | 20oC - 200oC | 20oC - 400oC | [W/(m*K)] | [J/(kg*K)] | [(Ohm*mm2)/m] |
7,7 | 220 | 11,0 | 12,0 | 25 | 460 | 0,60 |
PRODUCT FORM | THICKNESS | HEAT TREATMENT | HARDNESS | PROOF STRENGTH | |
---|---|---|---|---|---|
(1) | max | (5)(13) | HRB max | HB or HV max | Rp0,2 [MPa] min. (14)(15) |
[mm] | - | (transverse) | |||
C | 8,0 | A | 75(30) | - | 220(*) |
H | 13,5 | A | 75(30) | - | 220(*) |
TENSILE STRENGTH | ELONGATION AFTER FRACTURE | IMPACT ENERGY (ISO-V) | |
---|---|---|---|
Rm | A80mm [%] min (2) |
A [%] min (3) |
KV [J] min th>10mm |
[MPa] | th<3mm (tr. and long.) | th>=3mm (tr. and long.) | (longitudinal) |
380 - 560 | 25 | 25 | - |
380 - 560 | 25 | 25 | - |