55NiCrMoV7 material reference
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 55NICRMOV7 →55NiCrMoV7 · ISO 4957-2018
Chemical composition source verified; this does not verify every standard clause, actual supply or measured heat results
- Material form
- Reference record
- Original record status
- Original standard verified
- Standard edition
- ISO 4957-2018
- Table / clause
- Table 6 · Notes a–f
- PDF page references
- 17
Carbon-equivalent reference
Composition
| Element | Composition requirement |
|---|---|
| C | 0.5 ～ 0.6 |
| Si | 0.1 ～ 0.4 |
| Mn | 0.6 ～ 0.9 |
| Cr | 0.8 ～ 1.2 |
| Mo | 0.35 ～ 0.55 |
| V | 0.05 ～ 0.15 |
| Ni | 1.5 ～ 1.8 |
| P | ≤ 0.03 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
Applicability and limitations
Table 6 Hot-work tool steels, heat analysis wt%; P≤.030%, S is default ≤.020%, for 55NiCrMoV7 note d S≤.030%. ; Unlisted elements must not be intentionally added without purchaser consent, except additions needed to finish steelmaking; dashes are not entered as zero. ; Hardness in annealed/quenched-and-tempered conditions and test temperatures have specific state requirements. This review covers composition only and does not guarantee properties for arbitrary delivery conditions.. ; Hot-work tool steel does not establish suitability as cold-heading wire; do not automatically add cold-heading products..
Verification notes
All ranges and footnotes in original Table 6 were visually checked55NiCrMoV7 · BS EN ISO 4957:2018
Chemical-composition source verified. Properties and delivery conditions follow the sources and conditions stated here; actual supply and measured heat results are not verified by this reference.
- Material category
- Tool steel
- Product form
- Tool-steel standard reference; product form subject to the order
- Standard edition
- BS EN ISO 4957:2018
- Table / clause
- Table 6 and notes a–f
- Source file
- BS EN ISO 4957-2018-Tool steel.docx
- Units
- Mass fraction (wt%)
- Analysis type
- Cast analysis
Composition
| Element | Composition requirement |
|---|---|
| C | 0.5 ～ 0.6 |
| Si | 0.1 ～ 0.4 |
| Mn | 0.6 ～ 0.9 |
| Cr | 0.8 ～ 1.2 |
| Mo | 0.35 ～ 0.55 |
| V | 0.05 ～ 0.15 |
| Ni | 1.5 ～ 1.8 |
| P | ≤ 0.03 (lower limit not stated) |
| S | ≤ 0.03 (lower limit not stated) |
Applicability and limitations
Cast analysis, mass fraction %. A dash means the standard gives no separate requirement; it does not mean zero. Unlisted elements shall not be intentionally added without purchaser consent, except additions needed to finish steelmaking. Permissible product-analysis deviations do not expand the default cast-analysis limits. Tool-steel classification and hardness depend on application, heat treatment and test conditions; they do not establish cold-heading suitability or guarantee properties in an arbitrary condition. Table 6: hot-work tool steels; cast analysis, wt%; P≤.030%, default S≤.020%; for 55NiCrMoV7, note d specifies S≤.030%. Unlisted elements shall not be intentionally added without purchaser consent, except to finish steelmaking. Dashes are not entered as zero. Larger sizes are normally delivered quenched and tempered, at approximately 380 HBW. The 42 HRC test value applies only to smaller sizes (Table 6 notes e and f). Annealed and cold-drawn (+A+C) hardness may be 20 HBW higher than annealed (+A) hardness. Hardness values for different conditions must not be interchanged.
Composition and ordering conditions
- Cast analysis, mass fraction %. A dash means the standard gives no separate requirement; it does not mean zero.
- Unlisted elements shall not be intentionally added without purchaser consent, except additions needed to finish steelmaking.
- Permissible product-analysis deviations do not expand the default cast-analysis limits.
- Tool-steel classification and hardness depend on application, heat treatment and test conditions; they do not establish cold-heading suitability or guarantee properties in an arbitrary condition.
- Table 6: hot-work tool steels; cast analysis, wt%; P≤.030%, default S≤.020%; for 55NiCrMoV7, note d specifies S≤.030%.
- Unlisted elements shall not be intentionally added without purchaser consent, except to finish steelmaking. Dashes are not entered as zero.
- Larger sizes are normally delivered quenched and tempered, at approximately 380 HBW. The 42 HRC test value applies only to smaller sizes (Table 6 notes e and f).
- Annealed and cold-drawn (+A+C) hardness may be 20 HBW higher than annealed (+A) hardness. Hardness values for different conditions must not be interchanged.
Mechanical properties and delivery condition
| Property | Standard requirements and applicable conditions |
|---|---|
| Annealed hardness HBW / maximum | 248 |
| Hardening test | Austenitizing 850±10 °C ; oil quenching (standard test) ; tempering 500±10 °C ; hardness≥42 HRC |
Mechanical-property provenance：BS EN ISO 4957:2018 · Table 6 and notes a–f · Standard tables embedded in the Word document supplied by the user
Verification notes
Checked against the standard text and table notes supplied by the user. Applicability to a specific order requires separate confirmation.