QB16
1 source records. Standards, editions and conditions are presented separately; matching grade names do not establish interchangeability.
Refer to each source for mass fractions and analysis type. Missing values are not treated as 0. Manufacturer typical values, standard guarantees and measured heat results must remain separate. Use the material selector for calculations and condition selection.
Open condition selection, comparison and carbon-equivalent tools for QB16 →QB16 · Q/320582 JYG19-2023
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Cold-heading steel
- Subcategory
- Cold-heading steel
- Material form
- Wire rod
- Original record status
- Manufacturer source verified
- Document edition
- 2023 Edition; Published 2023-08-25, implemented 2023-09-25; Supersedes 2019 edition
- Document title
- Hot-rolled wire rod of cold-heading steel for automotive applications
- Table / clause
- Table 1
- PDF page references
- 6
- Unit
- Mass fraction (wt%)
- Manufacturer
- Jiangsu Yonggang Group Co., Ltd.
Carbon-equivalent reference
Estimate from manufacturer-published ranges, not a standard guarantee or measured heat result; formula applicability requires review against the application and process.
Composition
| Element | Composition requirement |
|---|---|
| C | 0.36 ～ 0.44 |
| Si | 0.15 ～ 0.3 |
| Mn | 0.45 ～ 0.7 |
| P | ≤ 0.015 (lower limit not stated) |
| S | ≤ 0.015 (lower limit not stated) |
| Cr | 0.8 ～ 1.15 |
| Al | ≤ 0.015 (lower limit not stated) |
| V | 0.25 ～ 0.35 |
| Mo | 0.5 ～ 0.65 |
| Ni | ≤ 0.2 (lower limit not stated) |
| Cu | ≤ 0.2 (lower limit not stated) |
Applicability and limitations
Yonggang Q/320582 JYG19-2023, Table 1, row 39 (quenching-and-tempering type), PDF page 6, cast analysis wt%; orders, delivery condition and actual supply by Creation Group require separate confirmation.
Composition conditions
- Table 1 heat analysis, mass fractions wt%; Dashes in the table do not mean zero..
- Residual Ni and Cu mass fractions are each ≤0.20% per Clause 6.1.3; Cr in the table shall be according to the corresponding grade.
- Footnote a: Al in the table refers to total aluminum; If acid-soluble aluminum Alₛ is determined, then Alₛ≥0.015%..
- Applies to hot-rolled wire rod for automotive fasteners, supplied in the hot-rolled condition.; Annealing and other delivery conditions must be specified in the contract.