Wuxi Zhongxin Special Steel Co.，Ltd
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309 Stainless Steel Strip Coil / Slit Coil / Strips ASTM A167 Full Hard Tempered Or Annealed overview
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.
Sheet, plate , Strip, pipe ,tube ,bar ,profiles
ASTM A167 (309), ASTM A240 (309S)
309 Stainless Steel Specifications:
ASTM A240 for annealed condition
ASTM A666 for tempered material
Hot Rolled Strip Available Size
Width: 16.0~609.6 mm
Thickness: 2.5~10.0 mm
Available Steel Grade:
Cold Rolled Strip Available Size
Width: 4.0~609.6 mm
Thickness: 0.1~3.0 mm
Surface Finish:
2B, 2D, BA, No.3, No.4, No.5, SB, HL, etc
| Surface finish | Characteristics and application |
| NO.2B | The surface brightness and flatness of no2B is better than no2D. then through a special surface treatment to improve its mechanical properties,No2B could nearly satisfy compreh ensive uses. |
| NO.1 | The surface is finished by heat treatment and pickling or processes corresponding thereto after hot rolling. |
| NO.4 | Polished with abrasive belt of grit #150-#180,have better brightness with discontinuous coarse stria,but thinner than No3, are used as bathtub buildings inner and external ornaments electrical appliances kitchen utensils and food processing equipment etc. |
| HL | Polished with abrasive belt of grit #150#320 on the NO.4 finish and has continuous streaks,mainly used as buildingsornaments elevators,door of building,frontal plate etc. |
| BA | Cold rolled, bright annealed and skin-passed, the product have excellent brightness and good reflexivity like mirror,kitchen apparatus,ornament etc. |
| 8K | The product have excellent brightness and prefer reflexivity can to be the mirror. |
Condition :
ANNEALED CONDITION
Ultimate Tensile Strength: 95 KSI min (655 MPA min) Yield Strength (0.2% Offset): 38 KSI min (260 MPA min) Elongation: 40%min Hardness: B95 max
TEMPERED 1/16 HARD
Ultimate Tensile Strength: 95 KSI min (655 MPA min) Yield Strength (0.2% Offset): 45 KSI min (310 MPA min) Elongation: 40% min
Tempered 1/8 Hard Ultimate Tensile Strength: 100 KSI min (690 MPA min) Yield Strength (0.2% Offset): 55 KSI min (380 MPA min) Elongation: 45% min
TEMPERED 1/4 HARD
Ultimate Tensile Strength: 125 KSI min (860 MPA min) Yield Strength (0.2% Offset): 75 KSI min (515 MPA min) Elongation: 25% min
TEMPERED 1/2 HARD
Ultimate Tensile Strength: 150 KSI min (1035 MPA min) Yield Strength (0.2% Offset): 110 KSI min (760 MPA min) Elongation: 15% < 0.15" 18% > 0.15"
TEMPERED 3/4 HARD
Ultimate Tensile Strength: 175 KSI min (1205 MPA min) Yield Strength (0.2% Offset): 135 KSI min (930 MPA min) Elongation: 10% < 0.15" 12% > 0.15"
TEMPERED FULL HARD
Ultimate Tensile Strength: 185 KSI min (1275 MPA min) Yield Strength (0.2% Offset): 140 KSI min (965 MPA min) Elongation: 8% < 0.15" 9% > 0.15"
Available Steel Grade:
Stainless steel : Type 201, 202, 205, 301, 302, 302B, 303, 303Se, 304, 304L, 302HQ, 304N, 305, 308, 309, 309S, 310, 310S, 314, 316, 316L, 316F, 316N, 317, 317L, 317LMN, 321, 330, 347, 348, 384, 405, 409, 429, 430, 430F, 430FSe, 434, 436, 442, 446, 403, 410, 414, 416, 416Se, 420, 420F, 422, 431, 440A, 440B, 440C, 630 , 13-8 PH ,15-5 PH , 17-7 PH ,17-4 ph , 904L , A286 ,VG-10 , SAE 316 , SAE 316L , SAE 440 , SAE 420
Duplex stainless steel : 2205 , 2304 , 2507
Nickel alloy :
Titanium and titanium alloys
exhaust manifolds, furnace parts, heat exchangers, pharmaceutical and photographic equipment, valve and pump trim, chemical equipment, digesters, tanks, evaporators, pulp, paper and textile processing equipment, parts exposed to marine atmospheres and tubing
PHYSICAL PROPERTIES
Density: 0.289 lbs/in3 9.01 g/cm3
Electrical Resistivity: microhm-in (microhm-cm): 68 °F (20 °C): 30.7 (78.0)
Specific Heat: BTU/lb/°F (kJ/kg•K):
32 - 212 °F (0 - 100 °C): 0.12 (0.50)
Thermal Conductivity: BTU/hr/ft2/ft/° F, (W/m•K)
At 212 ° F (100 °C)-9.0 (15.6)
At 932 ° F (500 °C)-10.8 (18.7)
Mean Coefficient of Thermal Expansion: in/in/°F (µm/m•K)
32 -212 °F (0 -100 °C)-8.3 x 10-6 (14.9)
32 -600 °F (0-315 °C)-9.3 x 10-6 (16.7)
32-1000 °F (0-538 °C)-9.6 x 10-6 (17.3)
32 -1200 °F (0 -649 °C)-10.0 x 10-6 (18.0)
Modulus of Elasticity: ksi (MPa)
29 x 103 (200 x 103) in tension
11.2 x 103 ( 78 x 103) in torsion
Magnetic Permeability, H = 200 Oersteds: Annealed < 1.02 max.
Melting Range: 2550 - 2590 ° F (1399 - 1454 °C)
FORMS
Coil -Strip, Foil, Ribbon Wire -Profile, Round, Flat, Square
MECHANICAL PROPERTIES AT ROOM TEMPERATURE PROPERTIES: TYPICAL
Ultimate Tensile Strength: 75 KSI min (620 MPa min) Yield Strength (0.2% Offset): 30 KSI min (205 MPa min) Elongation: 40% min Hardness: Rb 95 max
TEMPERED
309 can be supplied in a rolled tempered condition.
ADDITIONAL PROPERTIES
FINISHES
# 1 - Hot rolled annealed and descaled. It is available in strip, foil and ribbon. It is used for applications where a smooth decorative finish is not required.
# 2D - Dull finish produced by cold rolling, annealing and descaling. Used for deep drawn parts and those parts that need to retain lubricants in the forming process.
# 2B - Smooth finish produced by cold rolling, annealing and descaling. A light cold rolling pass is added after anneal with polished rolls giving it a brighter finish than 2D. #BA- Bright annealed cold rolled and bright annealed #CBA- Course bright annealed cold rolled matte finish and bright anneal
#2 - Cold Rolled
# 2BA- Smooth finish produced by cold rolling and bright annealing. A light pass using highly polished rolls produces a glossy finish.
2BA finish may be used for lightly formed applications where a glossy finish is desired in the formed part. Polished - Various grit finish for specific polish finished requirements. * Special finishes are available for all alloys - Contact US for more information
Q: Would you provide samples For free?
A: Yes. with on stock specification We provide samples For Free. Freight charge collect
Q: What information should i provide to source for the right products?
A: Material grade, width, thickness, coating and Purchase quantity, Expected lead time, etc
Q: What are the shipping ports?
A: Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you
can choose other ports according to your needs.
Q: About product prices?
A: Prices vary from period to period due to cyclical changes in the price of raw materials.
Q: How long does your delivery time take?
A: In general, our delivery time is within 5-45 days, and may be delayed if the demand is extremely
large or special circumstances occur.
Q: Can I visit your location?
A: Of course, we welcome customers from all over the world to visit our factory. However, some
of the plants are not open to the public.
Q: Does the product have quality inspection before loading?
A: Of course, all our products are strictly tested for quality before packaging, and unqualified products will be destroyed. We provide All Original Mill test certificate and support third party inspection.
Q: How to pack the products?
A: The inner layer has a waterproof paper outer layer with iron packaging and is fixed with a fumigation
wooden pallet. It can effectively protect products from corrosion during ocean transportation.
Q: What is your working time?
A: In general, our online service time is Beijing time: 8:00-22:00, after 22:00,
we will reply to your inquiry during the next working day.