Heat Resistant 309S Stainless Steel Strip AISI309S Stainless Steel
Roll EN 1.4833 Stainless Steel
309S Stainless Steel Strip Specifications
- Grade: 309S
- Standard: ASTM/EN/JIS
- Thickness: 0.03mm-3.0 mm
- Width: 1.5mm-600 mm
- Length: coil type or it can be produced as customer requirements
- Surface Finish: NO.1, 2B, 2H(Rerolled Bright), BA, No.4, 8K
(Mirror), HL (Hairline), Polishing Bright, etc
- Edge: Mill Edge, Slit Edge, Deburred Edge, Round Edge, V Type Edge
Description of 309S Stainless Steel Strip
Types 309 Stainless Steel and 309S are austenitic chromium-nickel
stainless steels that provide excellent corrosion resistance and
heat resistance plus good strength at room and elevated
temperatures. Type 309S Stainless Steel is identical to Type 309
except for a lower carbon content that minimizes carbide
precipitation and improves weldability. They are essentially
nonmagnetic as annealed and become lightly magnetic when cold
worked.
PRODUCT FORMS:
Sheet, Strip
SPECIFICATIONS:
ASTM A167 (309), ASTM A240 (309S)
TYPICAL APPLICATIONS of 309S Stainless Steel Strip
furnace parts, heating elements, aircraft and jet engine parts,
heat exchangers, sulfite liquor handling equipment, kiln liners,
boiler baffles, refinery and chemical processing equipment, and
auto exhaust parts
CHEMICAL COMPOSITION: (A167, A240)
| Element | Type
309 | Type
309S |
|---|
| Carbon | 0.20 max. | 0.08 max. |
|---|
| Manganese | 2.00 max. | 2.00 max. |
|---|
| Sulfur | 0.030 max. | 0.030 max. |
|---|
| Phosphorus | 0.045 max. | 0.045 max. |
|---|
| Silicon | 0.75 max. | 0.75 max. |
|---|
| Chromium | 22.0 – 24.0 | 22.0 – 24.0 |
|---|
| Nickel | 12.0 – 15.0 | 12.0 – 15.0 |
|---|
MECHANICAL PROPERTIES: (ASTM A167, A240)
| Type | Yield Strength 0.2% offset (KSI) | Tensile Strength (KSI) | % Elongation (2″ Gauge length) |
|---|
| 309 | 30 min. | 75 min. | 40 min. |
|---|
| 309S | 30 min. | 75 min. | 40 min. |
|---|
PHYSICAL PROPERTIES:
| Density (lb./ in^2) @ RT | | 0.29 |
|---|
| Modulus of Elasticity in Tension (psi x 10^6) | | 29.0 |
|---|
| Specific Heat (BTU/o F/lb.) | 32 to 212 oF | 0.12 |
|---|
| Thermal Conductivity (BTU/hr/ft^2/ft) | 212oF | 9.0 |
|---|
| 932oF | 10.8 |
|---|
| Mean Coefficient of Thermal Expansion (in. x 10^-6 per o F) | 32 to 212oF | 8.3 |
|---|
| 32 to 600oF | 9.3 |
|---|
| 32 to 1,000oF | 9.6 |
|---|
| 32 to 1,200oF | 10.0 |
|---|
| Electrical Resistivity (micro ohms – cm) | at 70oF | 39.8 |
|---|
| Melting Point Range (oF) | | 2550 – 2650 |
|---|
| Oxidation Resistance – Continuous Service(oF) | | 2000 |
|---|
| Oxidation Resistance – Intermittent Service(oF) | | 1800 |
|---|
PROCESSING:
These alloys are not hardenable by heat treatment. Anneal at 1900 –
2050°F (1038 – 1121°C), then water quench or rapidly air cool.
FORMING:
Types 309 and 309S Stainless Steels can be roll formed, stamped and
drawn readily. In-process annealing is usually required to reduce
hardness and increase ductility.
WELDING:
Type 309 is generally considered to have weldability nearly
equivalent to the most common alloys of this class, Types 304 and
304L. When a weld filler is needed, AWS E/ER 309 and 310 are most
often specified.
CORROSION:
Types 309 and 309S provide excellent general corrosion resistance.
They are more resistant to marine atmospheres than Type 304. They
exhibit high resistance to sulfite liquors and are useful for
handling nitric acid, nitric-sulfuric acid mixtures, and acetic,
citric, and lactic acids.
