347 Stainless Steel Bar
Prime Mill Grade | Certified China Exporter & Factory Direct Supply

347 Stainless Steel Bar - Technical Overview & Specifications
347 is a stable austenitic chromium steel, containing niobium, which can eliminate carbide precipitation, thereby eliminating corrosion during the year. 347 is stabilized by the addition of chromium and tantalum, and provides higher creep and stress rupture properties than alloys 304 and 304L, which can also be used for sensitization and exposure to corrosion problems during the year. The addition of niobium also makes the 347 alloy have excellent corrosion resistance, even better than the 321 alloy.
Product Parameters
| Product Name | 347 Stainless Steel Bar |
| Type | Steel Bar |
| Outer Diameter | Round Bar , 4mm-500mm |
| Hexagon Bar | 18mm-57mm (11/16″ to 2-3/4″) |
| Square Bar | 18mm-47mm (11/16″ to 1-3/4″) |
| Flat Steel | 1/2 "to 10", Thickness: 2mm-150mm, Can provide customized |
| Length | 1-6 meters, Length can be customized |
| Standard | ASTM, AISI, JIS, GB, DIN, EN, etc. |
| Surface | Black, Bright Polished, Rough Turning, Mattness Surface Treatment, No. 4. BA, etc. |
| Scope of Application | Stainless steel bars are used in a variety of industries such as shipbuilding, Defense, Automotive, Textiles, Paper and pulp, Manufacturing, Cement, Heavy earthmoving equipment and construction, etc. |
Chemical Composition
| C | Si | Mn | Cr | Ni | S | P |
|---|---|---|---|---|---|---|
| ≤ 0.08 | ≤ 0.75 | ≤ 2.0 | 18.0~20.0 | 9.0~13.0 | ≤ 0.03 | ≤ 0.04 |
Mechanical Properties
| Tensile Strength Kb (MPa) | Yield Strength σ0.2 (MPa) | Elongation D5 (%) | Hardness |
|---|---|---|---|
| ≥ 515 | ≥ 205 | ≥ 40 | ≤ 201HB;≤ 95HRB |
Physical Performance
| Density( g/cm³ ) | Modulus of Elasticity( Gpa ) | Coefficient of Thermal Expansion( 10 -6 /°C ) | Coefficient of Thermal Conductivity( W/m * K ) | Resistivity( ΜΩ. cm ) |
|---|---|---|---|---|
| 7.97 | 193 | 1 6.0 | 16.3 | 72 |
International Standard Grade Comparison
| No | China | Japan | USA | South Korea | Germany | India | Australia | Taiwan, China | |
|---|---|---|---|---|---|---|---|---|---|
| GB | JIS | ASTM | UNS | KS | DIN | BIS | AS | CNS | |
| Austenitic stainless steel | |||||||||
| 1 | 12Cr17Mn6Ni5N | SUS201 | 201 | S20100 | STS201 | 1.4372 | 10Cr17Mn6Ni4N20 | 201-2 | 201 |
| 2 | 12Cr18Mn9Ni5N | SUS202 | 202 | S20200 | STS202 | 1.4373 | - | - | 202 |
| 3 | 12Cr17Ni7 | SUS301 | 301 | S20200 | STS301 | 1.4319 | 10Cr17Ni7 | 301 | 301 |
| 4 | 06Cr19Ni10 | SUS304 | 304 | S30400 | STS304 | 1.4301 | 07Cr18Ni9 | 304 | 304 |
| 5 | 022Cr19Ni10 | SUS304L | 304L | S30403 | STS304L | 1.4306 | 02Cr18Ni11 | 304L | 304L |
| 6 | 06Cr19Ni10N | SUS304N1 | 304N | S30451 | STS304N1 | 1.4315 | - | 304N1 | 304N1 |
| 7 | 06Cr19Ni9NbN | SUS304N2 | XM21 | S30452 | STS304N2 | - | - | 304N2 | 304N2 |
| 8 | 022Cr19Ni10N | SUS304LN | 304LN | S30453 | STS304LN | - | - | 304LN | 304LN |
| 9 | 10Cr18Ni12 | SUS305 | 305 | S30500 | STS305 | 1.4303 | - | 305 | 305 |
| 10 | 06Cr23Ni13 | SUS309S | 309S | S30908 | STS309S | 1.4833 | - | 309S | 309S |
| 11 | 06Cr25Ni20 | SUS310S | 310S | S31008 | STS310S | 1.4845 | - | 310S | 310S |
| 12 | 06Cr17Ni12Mo2 | SUS316 | 316 | S31600 | STS316 | 1.4401 | 04Cr17Ni12Mo2 | 316 | 316 |
| 13 | 06Cr17Ni12Mo2Ti | SUS316Ti | 316Ti | S31635 | - | 1.4571 | 04Cr17Ni12MoTi20 | 316Ti | 316Ti |
| 14 | 022Cr17Ni12Mo2 | SUS316L | 316L | S31603 | STS316L | 1.4404 | ~02Cr17Ni12Mo2 | 316L | 316L |
| 15 | 06Cr17Ni12Mo2N | SUS316N | 316N | S31651 | STS316N | - | - | 316N | 316N |
| 16 | 022Cr17Ni13Mo2N | SUS316LN | 316LN | S31653 | STS316LN | 1.4429 | - | 316LN | 316LN |
| 17 | 06Cr18Ni12Mo2Cu2 | SUS316J1 | - | - | STS316J1 | - | - | 316J1 | 316J1 |
| 18 | 022Cr18Ni14Mo2Cu2 | SUS316J1L | - | - | STS316J1L | - | - | - | 316J1L |
| 19 | 06Cr19Ni13Mo3 | SUS317 | 317 | S31700 | STS317 | - | - | 317 | 317 |
| 20 | 022Cr19Ni13Mo3 | SUS317L | 317L | S31703 | STS317L | 1.4438 | - | 317L | 317L |
| 21 | 06Cr18Ni11Ti S | SUS321 | 321 | S32100 | STS321 | 1.4541 | 04Cr18Ni10Ti20 | 321 | 321 |
| 22 | 06Cr18Ni11Nb | SUS347 | 347 | S34700 | STS347 | 1.4550 | 04Cr18Ni10Nb40 | 347 | 347 |
| Duplex stainless steel | |||||||||
| 1 | - | SUS329J1 | 329 | S32900 | STS329J1 | 1.4477 | - | 329J1 | - |
| 2 | 022Cr23Ni5Mo3N | - | S32205 | F60 | - | 1.4462 | - | 2205 | 2205 |
| 3 | 022Cr25Ni7Mo4N | - | S32750 | F53 | - | 1.4410 | - | 2507 | 2507 |
| Ferritic stainless steel | |||||||||
| 1 | 06Crl3Al | SUS405 | 405 | S40500 | STS405 | 1.4002 | 04Cr13 | 405 | 405 |
| 2 | 022Cr11Ti | SUH409 | 409 | S40900 | STS409 | 1.4512 | - | 409L | 409L |
| 3 | 022Cr12 | SUS410L | - | - | STS410L | - | - | 410L | 410L |
| 4 | 10Cr17 | SUS430 | 430 | S43000 | STS430 | 1.4016 | 05Cr17 | 430 | 430 |
| 5 | 10Cr17Mo | SUS434 | 434 | S43400 | STS434 | 1.4113 | - | 434 | 434 |
| 6 | 022Cr18NbTi | - | - | S43940 | - | 1.4509 | - | 439 | 439 |
| 7 | 019Cr19Mo2NbTi | SUS444 | 444 | S44400 | STS444 | 1.4521 | - | 444 | 444 |
| Martensitic stainless steel | |||||||||
| 1 | 12Cr12 | SUS403 | 403 | S40300 | STS403 | - | - | 403 | 403 |
| 2 | 12Cr13 | SUS410 | 410 | S41000 | STS410 | 1.4006 | 12Cr13 | 410 | 410 |
| 3 | 20Cr13 | SUS420J1 | 410 | S42000 | STS420J1 | 1.4021 | 20Cr13 | 420 | 420J1 |
| 4 | 30Cr13 | SUS420J2 | - | - | STS420J2 | 1.4028 | 30 Cr13 | 420J2 | 420J2 |
| 5 | 68Cr17 | SUS440A | 440A | S44002 | STS440A | - | - | 440A | 440A |
Product Features & Advantages
- Manufactured to ASTM, AISI, JIS, GB, DIN, EN, etc. with strict dimensional tolerance and surface quality
- Reliable Stainless Steel Bar solution for construction, machinery and industrial projects
- Custom processing available: cutting, bending, decoiling, slitting and surface polishing
- Mill Test Certificate (MTC) and full inspection provided
Applications & Industries
Scope of Application
Stainless steel bars are used in a variety of industries such as shipbuilding, Defense, Automotive, Textiles, Paper and pulp, Manufacturing, Cement, Heavy earthmoving equipment and construction, etc.
Customer Reviews & Mill Quality Audits
Overall Satisfaction from Global EPC & Steel Buyers
EN 10204 3.1 Chemical & Tensile Verification Passed
SGS, BV & Cotecna Third-Party Audits Supported
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