Sheet, strip 7X3 - 55NiCrMoV6 - 1.2713 - Wnl
Steel tool stamping. Not applicable for welded structures, sensitive to flock formation, prone to temper brittleness: Hardness after annealing (GOST 5950−2000) HB 10 -1 = 229 MPa. The temperature of the critical points of the material: Ac 1 = 770, Ac 3 (Acm) = 730, Mn = 400
Tempering 870 ° C, oil, tempering 500 ° C, 2 hours
Mechanical properties (temperature 20 ° C)
- sв — Short-term strength limit: 1320 MPa
- sT — Proportionality limit (yield strength for permanent deformation): 1240 MPa
- d5 — Elongation at break: 10%
- y — Relative narrowing: 36%
- KCU — Impact strength: 370 kJ / m 2
Production of punches, matrixes of forming billets from carbonaceous and low-alloy structural steels on horizontal forging machines. Production of die parts (matrixes, punches, ejectors) for hot pressing and extrusion of these materials on crank presses, bending, trimming and punching stamps.
Percent composition, GOST 5950−2000
|basis||0.65 — 0.75||0.1 — 0.4||0.15 — 0.45||≤0.4||≤0.03||≤0.03||3.2 — 3.8||≤0.2||≤0.2||≤0.15||≤0.03||≤0.3|
Germany (DIN, WNr): 55NiCrMoV6, 57NiCrMoV7−7, X38CrMoV5−1, X40CrMoV5−1.
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