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Grade 303 / UNS S30300 Polished Stainless Steel Bars And Rods Length Within 6m

Grade 303 / UNS S30300 Polished Stainless Steel Bars And Rods Length Within 6m

Brand Name : WINFAST
Model Number : 303
Certification : ISO
Place of Origin : CHINA
MOQ : 500 kgs
Price : 2500 - 3000 USD/Ton
Payment Terms : 30% TT inadvance , 70% TT balance against copy of B/L
Supply Ability : 20 Ton/Month
Delivery Time : 10 - 14 days
Packaging Details : export packing or as cilents request
Products : Stainless steel grinding round bar
Diameter : 12 - 150mm
Length : within 6m
Finish Tolerance : H9
Grade : 303
Service : Cutting
Other grade : 200/300/400 series
Other shape : square / flat / heaxgon
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Grade 303 / UNS S30300 Stainless Steel Round Bar Polished Stainless Steel Bars

Product name303 stainless steelround bar
MOQ500 kgs
Surfacegrinding polish
Techniquecold drawn
Samplesample freely
Payment terms30% TT inadvance and 70% TT balance against copy of B/L
PackingStandard Seaworthy Package
MTCevery materials has it's own MTC
Delivery time7-15 dyas,or according to the order quantity or upon negotiation
Place of originShanghai, China(mainland)

More informations about our stainless steel bar

Product NameStainless Steel Round Bar
GradeMainly in grade 201 301 303 309S 310S 316L 317L 321 410 420 440A/B/C 2205 2507 904L 17-4ph 17-7ph 15-5ph
Diameter10 - 310mm
Length2000mm~6500mm or cut to any length as your request
ShapeRound Section
Surfaceblack / polished

Packing Detail information

Packing Details

Export standard package,bundled or be required.
The inner size of container is below:
20ft GP: 5.8m(length) x 2.13m(width) x 2.18m(high)
40ft GP: 11.8m(length) x 2.13m(width) x 2.18m(high)
40ft HG: 11.8m(length) x 2.13m(width) x 2.72m(high)

Delivery Details7-15 dyas,or according to the order quantity or upon negotiation
Loading25 Tons full 20ft and 40ft container

Grade 303 represents the optimum in machinability among the austenitic stainless steels. It is primarily used when production involves extensive machining in automatic screw machines. Machinability Rating (compared to B1212) is approximately 78%.
303 is also available as a "Ugima" Improved Machinability grade, with machinability even higher than that of the standard 303.
The sulphur addition which is responsible for the improved machining and galling characteristics of Grade 303 lowers its corrosion resistance to below that of Grade 304. As for other austenitic grades the structure gives 303 excellent toughness, although the sulphur in 303 reduces its toughness slightly.

Key Properties

These properties are specified for long product (bar) in ASTM A582. Similar but not necessarily identical properties are specified for other products such as wire and forgings in their respective specifications. Grade 303 is not produced in flat rolled products.


Typical compositional ranges for grade 303 stainless steels are given in table 1.
Table 1. Composition ranges for 303 grade stainless steel












Corrosion Resistance

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Good resistance to mildly corrosive atmospheres, but significantly less than Grade 304 due to the sulphur addition; the sulphide inclusions act as pit initiation sites. Grade 303 should not be exposed to marine or other similar environments, as these will result in rapid pitting corrosion. Because the sulphide inclusions in 303 are primarily aligned along the rolling direction the corrosion resistance is particularly reduced in cross-sections.
Grade 303, like other common austenitic stainless steels, is subject to stress corrosion cracking in chloride containing environments above about 60°C.

Heat Resistance

Good oxidation resistance in intermittent service to 760°C and in continuous service to 870°C. Continuous use in 425-860°C range not usually recommended due to carbide precipitation - 303 usually does not have a low carbon content so is susceptible to sensitisation.

Heat Treatment

Solution Treatment (Annealing) - Heat to 1010-1120°C and cool rapidly. This grade cannot be hardened by thermal treatment.


A "Ugima" improved machinability version of grade 303 is available in round bar products. This machines significantly better even than standard 303, giving very high machining rates and lower tool wear in many operations.

Typical applications include:
• Nuts and Bolts
• Bushings
• Shafts
• Aircraft Fittings
• Electrical Switchgear Components
• Gears
• In general any component that is heavily machined and where the corrosion resistance and fabrication properties of 303 are viable.

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