Unimix Metal Cooperation is a top manufacturer of Stainless Steel 309 Pipes, which surpass 304 stainless in both strength and corrosion resistance. SS 309S pipes are renowned for their exceptional resistance to oxidation and strength at continuous temperatures up to 2000°F (1093°C). Stainless Steel UNS S30900 Welded Pipes and Tubes do not respond to heat treatment, but Alloy 309 pipes can enhance their strength and toughness through cold work. Heat treatment cannot harden ASTM A312 Stainless Steel 309 Seamless Pipes, as they remain in an austenitic state at room temperature. SS 309 Electropolish pipes stand out for their excellent mechanical properties in high-temperature conditions.
The titanium-stabilized 309H Stainless Steel Pipe is particularly suited for sensitizing applications, offering excellent inter-granular corrosion resistance after exposure to temperatures between 800°F and 1500°F during chromium precipitation. Alloy 309 Tubes cannot be hardened through heat treatment, as they remain austenitic at room temperature. SS DIN 1.4828 Welded Pipes exhibit higher tensile strength and yield and are suitable for cold working at high temperatures. AISI 309 Pipes are non-magnetic but become magnetic when cold worked.
We proudly offer a wide range of 309 SS Pipe & Tubing, including 309L and 309H SS Pipes & Tubing, ready for sale to our valued customers. Contact us today for all your piping needs!
Grade | SS 309 / TP 309 Stainless Steel Pipes / Stainless Steel 309/309S/309HS / TP 309S Stainless Steel Pipes |
Size | 1/8″NB TO 30″NB IN |
Standard | ASTM A / ASME SA213 / A249 / A269 / A312 / A358 CL. I to V |
Form | Round Pipes, Square Pipes, Rectangular Pipe, “U” Shape, Oval Pipes, Hydraulic Pipes |
Schedule | SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS, SCH XS |
Length | Single Random, Double Random & Cut Length. |
Type | Seamless / ERW / Welded / Fabricated / EFW /LSAW |
End | Plain End, Beveled End, Treaded |
Standard | SS 309H | SS 309S |
UNS | UNS S30900 | UNS S30908 |
WERKSTOFF NR. | 1.4833 | 1.4833 |
AFNOR | – | – |
JIS | – | – |
GOST | – | – |
BS | – | – |
EN | – | – |
NB Sizes | Sch 5 | Sch 10 | Sch 40 | Sch 80 | Sch 160 |
1/8″ | – | – | – | – | – |
1/4″ | – | – | – | – | – |
3/8″ | – | – | – | – | – |
1/2″ | – | – | – | – | – |
3/4″ | – | – | – | – | – |
1″ | – | – | – | – | – |
1 1/4″ | – | – | – | – | – |
1 1/2″ | – | – | – | – | – |
2″ | – | – | – | – | – |
2 1/2″ | – | – | – | – | – |
3″ | – | – | – | – | – |
4″ | – | – | – | – | – |
5″ | – | – | – | – | – |
6″ | – | – | – | – | – |
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
309 | min. | – | – | – | – | – | 24.0 | – | 19.0 | – |
max. | 0.25 | 2.0 | 1.50 | 0.045 | 0.030 | 26.0 | 22.0 | – | ||
Grade | Tensile Strength (MPa) min | Yield Strength 0.2% Proof (MPa) min | Elongation (% in 50mm) min | Hardness | |
Rockwell B (HR B) max | Brinell (HB) max | ||||
309 – 310S | 515 | 205 | 40 | 95 | 217 |
Grade | Density (kg/m3) | Elastic Modulus (GPa) | Mean Coefficient of Thermal Expansion (m/m/0C) | Thermal Conductivity (W/m.K) | Specific Heat 0-1000C (J/kg.K) | Electrical Resistivity (n.m) | |||
0-1000C | 0-3150C | 0-5380C | at 1000C | at 5000C | |||||
310 – 310S | 7750 | 200 | 15.9 | 16.2 | 17.0 | 14.2 | 18.7 | 500 | 720 |
Unimix Metal Corporate, under the leadership and mentoring of intellectual individuals, is currently one of the Manufacturer, Supplier, Stockiest, Importer and Exporter of Stainless Steel , Carbon Steel , Alloy Steel , High Nickel Alloys , Special Alloys , Aluminium Alloys , Copper Nickel , Titanium Alloys , Duplex & Super Duplex , Tantalum , Abrasion Resistant Steel, Hadfield Manganese Steel , Corten Steel , High Tensile , Quenched & Tempered Steel , Armour Steel , etc in Forms of Pipes , Tubes , Plates , Round Bars and Fittings.
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