AISI/SAE 4130 Carbon Steel Bar
Prime Mill Grade | Certified China Exporter & Factory Direct Supply

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Origin: China (Mill Direct) China Steel Exporter EN 10204 3.1 MTC
AISI/SAE 4130 Carbon Steel Bar - Technical Overview & Specifications
4130 cold-rolled round bars provide some recognized weldability without affecting the wear and impact resistance of the steel, carbon steel 4130 bars also have excellent machining properties and can be heat treated. At the same time, it has high tensile strength and high yield strength.
Product Parameters
| Product Name | AISI/SAE 4130 Carbon Steel Bar |
| Standard | EN / DIN / JIS / ASTM / BS / ASME / AISI, etc. |
| Common Round Bar Specifications | 3.0 - 50.8 mm , Over 50.8 - 300mm |
| Flat Steel Common Specifications | 6.35x12.7mm, 6.35x25.4mm, 12.7x25.4mm |
| Hexagon Bar Common Specifications | AF5.8mm - 17mm |
| Square Bar Common Specifications | AF2mm - 14mm, AF6.35mm , 9.5mm, 12.7mm, 15.98mm, 19.0mm, 25.4mm |
| Length | 1 - 6 meters, Size Accept Custom |
| Diameter(mm) | Hot Rolling R ound Bar , 25 - 600 , Cold Rolling Square Bar , 6 - 50.8 |
| Hot Rolling Square Bar | 21 - 54 , Cold Rolling Hexagon Bar , 9.5 - 65 |
| Cold Rolling Round bar | 6 - 101.6 , Forged Rebar , 200 - 1000 |
| Surface Process | Bright, Polished, Black |
| Other Services | Machining(cnc), Centerless Grinding(cg), Heat Treatment, Annealing, Pickling, Polishing, Rolling, Forging, Cutting, Bending, Small Machining, etc. |
Chemical Composition
| Grade | Mn | S | C | P | Si | Cr | Mo |
|---|---|---|---|---|---|---|---|
| AISI 4130 | 0.4-0.8 | 0.0 4 | 0.28-0.33 | 0.035 | 0.15-0.35 | 0.8-1.1 | 0.15-0.25 |
Mechanical Properties
| Grade | Tensile Strength N/mm2 Min | Yield Strength N/mm2 Min | A,% Min | Z ,% Min |
|---|---|---|---|---|
| AISI 4130 | 930 | 735 | 12 | 50 |
International Standard Grade Comparison
| USA | Japan | Germany | U.K. | France | Italy | Spain | Switzerland | China | ||
|---|---|---|---|---|---|---|---|---|---|---|
| AISI/SAE | JIS | W‐nr. | DIN | BS | EN | AFNOR | UNI | UNE | SS | GB |
| A570.36 | STKM 12A | 1.0038 | RSt.37‐2 | 4360 | ‐ | E 24‐2 | ‐ | ‐ | 1311 | 15 |
| - | STKM 12C | - | - | 40 C | - | Ne | - | - | - | - |
| 1015 | ‐ | 1.0401 | C15 | 080M15 | ‐ | CC12 | C15, C16 | F.111 | 1350 | 15 |
| 1020 | ‐ | 1.0402 | C22 | 050A20 | 2C | CC20 | C20, C21 | F.112 | 1450 | 20 |
| 1213 | SUM22 | 1.0715 | 9SMn28 | 230M07 | 1A | S250 | CF9SMn28 | F.2111 | 1912 | Y15 |
| 11SMn28 | ||||||||||
| 12L13 | SUM22L | 1.0718 | 9SMnPb28 | ‐ | ‐ | S250Pb | CF9SMnPb28 | 11SMnPb28 | 1914 | ‐ |
| ‐ | ‐ | 1.0722 | 10SPb20 | ‐ | ‐ | 10PbF2 | CF10Pb20 | 10SPb20 | ‐ | ‐ |
| 1215 | ‐ | 1.0736 | 9SMn36 | 240M07 | 1B | S300 | CF9SMn36 | 12SMn35 | ‐ | Y13 |
| 12L14 | ‐ | 1.0737 | 9SMnPb36 | ‐ | ‐ | S300PB | CF9SMnPb36 | 12SMnP35 | 1926 | ‐ |
| 1015 | S15C | 1.1141 | Ck15 | 080M15 | 32C | XC12 | C16 | C15K | 1370 | 15 |
| 1025 | S25C | 1.1158 | Ck25 | ‐ | ‐ | ‐ | ‐ | ‐ | ‐ | 25 |
| A572 - 60 | ‐ | 1.890 | StE380 | 4360 55 | ‐ | ‐ | FeE390KG | ‐ | 2145 | ‐ |
| 1035 | ‐ | 1.0501 | C35 | 060A35 | ‐ | CC35 | C35 | F.113 | 1550 | 35 |
| 1045 | ‐ | 1.0503 | C45 | 080M46 | ‐ | CC45 | C45 | F.114 | 1650 | 45 |
| 1140 | ‐ | 1.0726 | 35S20 | 212M36 | 8M | 35MF4 | ‐ | F210G | 1957 | ‐ |
| 1039 | ‐ | 1.1157 | 40Mn4 | 150M36 | 15 | 35M5 | ‐ | ‐ | ‐ | 40Mn |
| 1335 | SMn438(H) | 1.1167 | 36Mn5 | ‐ | ‐ | 40M5 | ‐ | 36Mn5 | 2120 | 35Mn2 |
| 1330 | SCMn1 | 1.1170 | 28Mn6 | 150M28 | 14A | 20M5 | C28Mn | ‐ | ‐ | 30Mn |
| 1035 | S35C | 1.1183 | Cf35 | 060A35 | ‐ | XC38TS | C36 | ‐ | 1572 | 35Mn |
| 1045 | S45C | 1.1191 | Ck45 | 080M46 | ‐ | XC42 | C45 | C45K | 1672 | Ck45 |
| 1050 | S50C | 1.1213 | Cf53 | 060A52 | ‐ | XC48TS | C53 | ‐ | 1674 | 50 |
| 1055 | ‐ | 1.0535 | C55 | 070M55 | 9 | ‐ | C55 | ‐ | 1655 | 55 |
| 1060 | ‐ | 1.0601 | C60 | 080A62 | 43D | CC55 | C60 | ‐ | ‐ | 60 |
| 1055 | S55C | 1.1203 | Ck55 | 070M55 | ‐ | XC55 | C50 | C55K | ‐ | 55 |
| 1060 | S58C | 1.1221 | Ck60 | 080A62 | 43D | XC60 | C60 | ‐ | 1678 | 60Mn |
| 1095 | ‐ | 1.1274 | Ck101 | 060A96 | ‐ | XC100 | ‐ | F.5117 | 1870 | ‐ |
| W1 | SK3 | 1.1545 | C105W1 | BW1A | ‐ | Y105 | C36KU | F.5118 | 1880 | ‐ |
| W210 | SUP4 | 1.1545 | C105W1 | BW2 | ‐ | Y120 | C120KU | F.515 | 2900 | ‐ |
Product Features & Advantages
- Manufactured to EN / DIN / JIS / ASTM / BS / ASME / AISI, etc. with strict dimensional tolerance and surface quality
- Reliable Carbon 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
Carbon Steel Bar
Customer Reviews & Mill Quality Audits
4.9 / 5.0|86+ Verified Inspections
4.9
Overall Satisfaction from Global EPC & Steel Buyers
100% Mill Test Reports (MTC)
EN 10204 3.1 Chemical & Tensile Verification Passed
Port Inspection Ready
SGS, BV & Cotecna Third-Party Audits Supported
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FAQ
QOnce the products received by customer were found not comply with the products or contract demands, what will you do?
AA: We will compensate the customer for all the loss without any hesitation.
QDo you provide samples Is it free or extra?
AA: Yes, we could offer free samples.
QWhat certifications do your products have?
AA: We have ISO 9001, SGS, EWC and other certifications.
QWhat kind of payment terms would you accept?
AA: We always do T/T.30% T/T as deposit,70% T/T as balance.
QWhat is the delivery time?
AA: 10-15 days
QWhat is your MOQ?
AA: We will provide Original Mill Usually 25 tonnes, but it can be adjusted according to your needs and the actual situation of the inventory.


