22Mn6 Material data
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22Mn6 · ISO 683-3:2022
Chemical composition · Cast analysis
Mass fraction %; Table 3, page 17 of the user's PDF. Unlisted elements must not be treated as 0; intentional addition of unlisted elements is subject to the standard and ordering agreement.
| Element | Mass fraction / % |
|---|---|
| C | 0.18～0.25 |
| Si | ≤0.4 |
| Mn | 1.3～1.65 |
| P | ≤0.025 |
| S | ≤0.035 |
| Cr | ≤0.4 |
| Mo | ≤0.1 |
| Ni | ≤0.4 |
| Cu | ≤0.3 |
When A.4 is expressly selected in the order, Si≥0.10% may be agreed; the basic table still specifies Si≤0.40%.
Delivery conditions and hardness · Table 7
Brinell hardness. +S: treated to improve shearability; +A: soft annealed; +TH: treated to a specified hardness range; +FP: treated to a ferrite-pearlite structure; +N: normalized. “—” means no requirement is specified for that delivery condition.
| Delivery condition | Brinell hardness requirement |
|---|---|
| +S | — |
| +A | ≤197 |
| +TH | 149～197 |
| +FP | — |
| +N | — |
Heat treatment and test-piece conditions · Table 8
| Item | Temperature / ℃ |
|---|---|
| Austenitizing temperature for the end-quench test | — |
| Carburizing temperature (guidance) | 880～980 |
| Direct and first quenching temperature (guidance) | 830～870 |
| Second quenching: core quenching temperature (guidance) | 880～920 |
| Second quenching: case quenching temperature (guidance) | 780～820 |
| Tempering temperature (guidance) | 150～200 |
Except for the end-quench austenitizing temperature, carburizing, quenching and tempering temperatures are guidance values; the actual process must achieve the required properties. Guidance holding times are at least 30 minutes for austenitizing and at least 1 hour for tempering. Select the quenching medium according to product shape, cooling conditions and furnace load.
Hardenability conditions · Tables 5 and 6
Tables 5 and 6 do not specify a hardenability band for this grade. Do not apply the band of another grade.
Permissible deviations in product analysis · Table 4
| Element | Specified cast-analysis range / % | Permissible product-analysis deviation / % |
|---|---|---|
| C | 0.07<C≤0.31 | ±0.02 |
| Si | ≤0.40 | ±0.03 |
| Mn | ≤1.00 / >1.00～1.65 | ±0.04 / ±0.06 |
| P | ≤0.025 | +0.005 |
| S | ≤0.040 | ±0.005 |
| Cr | ≤1.80 | ±0.05 |
| Mo | ≤0.30 / >0.30～0.50 | ±0.03 / ±0.04 |
| Ni | ≤1.00 / >1.00～2.00 / >2.00～3.50 | ±0.03 / ±0.05 / ±0.07 |
| Cu | ≤0.40 | +0.05 |
| B | ≤0.0050 | ±0.0003 |
“±” permits a deviation for a single cast above the upper limit or below the lower limit, in one direction only. Product-analysis deviations do not change the cast-analysis limits in Table 3.
Standard edition and ordering notes
- ISO 683-3:2022; the user-supplied file is the EN ISO 683-3:2022 adoption. Requirements from different editions are listed separately; existing sources are retained.
- The 2022 edition removes the minimum silicon content from Table 3. The basic requirement is Si≤0.40%; the minimum in Annex A.4 applies only as an expressly agreed ordering option.
- Annex A.4 prints 15MnCrS5 and 18CrMo7-6, which differ from the grade designations in Table 3. This page does not silently correct them or assign a minimum silicon content automatically; additional requirements must be agreed by purchaser and supplier.
- When ordered to hardenability requirements, Table 3, footnote a permits limited minor composition deviations: excluding P and S, C ±0.01%, and other elements within the Table 4 limits. These are not default ranges for ordinary orders.
- High-sulfur or lead-added free-cutting variants apply only at the purchaser's request and subject to agreement; they do not replace the ordinary composition ranges shown here.
The standard covers products including wire rod. Finished cold-heading wire supply, processing and properties require technical review and order confirmation. — means not specified in this table, not 0.
Source comparison: reviewed by Codex against the standard supplied by the user. This webpage does not replace the official standard, order agreement or inspection certificate.