SCR440WCH
2 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 SCR440WCH →SCr440WCH · JIS G3509
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material form
- Wire rod
- Original record status
- Reference transcription of standard
- Standard edition
- JIS G 3509-2:2003 → JIS G 3509-1:2021
- Table / clause
- Table 2 · continued table
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.38 ～ 0.43 |
| Si | 0.15 ～ 0.35 |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.03 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Ni | ≤ 0.25 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Cu | ≤ 0.3 (lower limit not stated) |
Applicability and limitations
G3509-2:2003 Clause 3: Raw materials shall comply with G3509-1; The reference in Clause 2 is undated and the latest edition applies. Ordinary steel branch, not the H hardenability guarantee branch. The lower limit of Si may be relaxed by agreement. Records labeled as wire rod on the website require separate verification of the WCH wire grade.. No edition is stated on the website; Displayed under this source edition; contract applicability is not established
Verification notes
Standard source: JIS G 3509-2:2003 → JIS G 3509-1:2021 · Table 2 and continuationView associated products →SCr440WCH · JIS G 3509-2-2003
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material category
- Alloy steel
- Material form
- Alloy-steel wire for cold heading
- Original record status
- Original standard verified
- Standard edition
- JIS G 3509-1:2003 (material reference in Clause 9 of JIS G 3509-2:2003)
- Table / clause
- Main text: Table 1, steel designations and notes 1–2; Table 2, ladle analysis and note (1)/notes 1–3
- PDF page references
- 7、8
- Unit
- Mass fraction (wt%)
- Analysis type
- Heat analysis
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.38 ～ 0.43 |
| Si | 0.15 ～ 0.35 |
| Mn | 0.6 ～ 0.9 |
| P | ≤ 0.03 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
| Ni | ≤ 0.25 (lower limit not stated) |
| Cr | 0.9 ～ 1.2 |
| Cu | ≤ 0.3 (lower limit not stated) |
Applicability and limitations
JIS G 3509-2:2003: main-text Table 1 lists SCr440WCH steel wire, and clause 9 references JIS G 3509-1. Composition is entered from heat analysis in main-text Table 2 of Part One of the same edition; values are not borrowed across editions. Main-text Table 2 gives heat analysis, mass fraction %. The default Si is 0.15–0.35%; a lower bound below 0.15% requires agreement between purchaser and supplier and is not the default. Note 1 to main-text Table 2: impurities for all grades, Cu≤0.30%. Note 2: Al for grain refinement is added only by agreement. Product-analysis deviations apply only by agreement under Table 4 of JIS G 0321. The actual designations in this edition are shown separately from later editions such as 2005/2010/2021; the historical edition does not establish a current standard or actual supply.