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6F7
Qilu
Product Description
Hot forged 6F7 round bar and blocks, supplied annealed or QT to 34-40 HRC, with heat treatment and ultrasonic testing done in our own workshop.
Equivalent to: AISI 6F7 · DIN 1.2767 / X45NiCrMo4 · 45NiCrMo16
AISI 6F7 1.2767 45NiCrMo16 5CrNi4Mo Hot Work Tool Steel
AISI 6F7 1.2767 45NiCrMo16 5CrNi4Mo Hot Work Tool Steel
AISI 6F7 1.2767 45NiCrMo16 5CrNi4Mo Hot Work Tool Steel
Supply form — Round bar, flats and blocks
Process — Hot forged / hot rolled
Condition — Annealed (≤ 248 HB), or QT to 34-40 HRC
Diameter range — 20-500 mm
Standard — ASTM A681 (6F-type) / DIN EN ISO 4957
Certificate — EN 10204 3.1 standard, 3.2 on request
Lead time — 20-35 days
6F7 (1.2767) is a nickel-chromium-molybdenum tool steel with ~4 % nickel. The high nickel gives exceptional toughness, which makes it the standard choice for heavy-duty shear blades, die holders, striking plates and large die blocks that must absorb shock without cracking — it is used in both cold- and hot-work service.
| Element | C | Si | Mn | Cr | Ni | Mo |
|---|---|---|---|---|---|---|
| DIN 1.2767 | 0.40-0.50 | ≤ 0.30 | 0.20-0.50 | 1.20-1.60 | 3.50-4.50 | 0.20-0.50 |
Typical values for the QT condition. 6F7 is normally run at lower hardness than the wear grades, optimising toughness.
| Property | Annealed | QT (typical) |
|---|---|---|
| Hardness | ≤ 248 HB | 34-40 HRC |
| Tensile strength, Rm (MPa) | — | 1100-1300 |
| Yield strength, Re (MPa) | — | ≥ 900 |
| Impact, KV (J) | — | ≥ 50 |
| Standard | Designation |
|---|---|
| ASTM (USA) | 6F7 |
| DIN / EN (Germany/Europe) | 1.2767 / X45NiCrMo4 |
| Werkstoff Nr. | 1.2767 |
| Related | ~1.2766 / 45NiCrMoV16 |
Cold work — heavy-duty shear blades, punching and piercing tools
Die holders — die holders, striking plates, backup plates
Hot work — large die blocks and inserts where toughness is critical
Plastics — mold bases and large cavities
6F7 is hardened from 840-870 °C in oil and tempered at 400-550 °C. The high nickel means toughness peaks in this lower-hardness range, which is exactly what shock-loaded parts need. We tune the tempering temperature to your spec and verify with Charpy testing.
Most suppliers in this business are traders who subcontract everything. We run our own processes, which means shorter cycles and one point of accountability when something needs fixing.
Heat treatment shop — quenching, tempering and vacuum heat treatment to your target hardness, with furnace charts recorded per batch
Machining shop — rough turning, peeling, milling and cutting to length, so your bar or block arrives ready for finish machining
Testing — ultrasonic per ASTM A388 / EN 10228-3, hardness mapping across the section, microstructure on request
Certification — EN 10204 3.1 as standard, 3.2 available with third-party witness (ABS, BV, CCS, GL)
Export packing — bundled, end-capped and rust-protected for sea freight
Heavy-duty parts that must absorb shock without cracking: shear blades, punching tools, die holders, striking plates and large die blocks. The 4 % nickel gives toughness that the high-carbon wear grades cannot match.
Both — it is a general-purpose tough tool steel used in cold-work service (shear blades, punches) and hot-work service (large die blocks). The choice is driven by toughness, not heat resistance.
EN 10204 3.1 mill certificate as standard. 3.2 with third-party witness on request.
Send us your grade, dimensions, quantity, required hardness and destination port. You will get a quotation with the full technical proposal within 24 hours.
Email: enquiry@qilumetal.com | Web: www.qilumetal.com
