Designation
DIN: | X 37 CrMoV 5-1
|
AFNOR: | Z 38 CDV 5
|
UNI: | X 37 CrMoV 5-1 KU
|
AISI: | H11 / H11 ESR
|
Indicatory analysis:
C | 0.38 |
Si | 1.00
|
Mn | 0.40 |
Cr | 5.30 |
Mo | 1.20 |
V | 0.40 |
Strength:
max. 230 HB
(≈ max. 780 N/mm²)
Thermal conductivity at 200 °C:
27 W/m K
Character:
high-alloy hot-work steel with high toughness and heat resistance, hot cracks resistance and good thermal conductivity; for very high requirements available in grade *ESR (Electro-Slag Remelted)
Application:
moulding plates and inserts for plastic injection mould tools; *ESR for applications for die casting (Al, Mg, Zn)
Treatment by
highly suitable:
Polishing
very easily feasible (graining):
Etching
EDM:
in the hardened and tempered condition, treat again for stress relief about 20 °C below the last tempering temperature
Nitriding:
increases the wear resistance and prevents the bonding of casting material
Hard chroming:
in special cases
Heat treatment:
Annealing:
750 to 800 °C, about 4 to 5 hours slow controlled cooling of 10 to 20 °C per hour to about 600 °C; further cooling in air, max. 205 HB
Hardening:
1000 to 1040 °C
15 to 30 minutes keeping curing temperature
quenching in water/oil/air
obtainable hardness: 50−56 HRC
Nitriding:
Before nitriding stress-relief annealing is recommended at 550 °C. (Meusburger standard)
A treatment at 525 °C in ammonia gas results in a surface hardness of approx. 55 HRC
Tempering:
slow heating to tempering temperature immediately after hardening; minimum time in furnace: 1 hour per 20 mm part thickness; repeated tempering is recommended
Tempering chart:
High temperature strength chart:
TechnicalTip:
- susceptible to corrosion; during maching, continuous corrosion protection has to be ensured (especially during wire EDM)
- 1.2343 ESR is highly suitable for mirror polishing
Vers l’aperçu de la construction de moules
Vers l’aperçu de la construction d'outils de découpe