Blow Molding Steel
The most common material to use in blow molds is an aluminum alloys, with inserts of higher hardness materials. Aluminum with inserts of Be-Cu 172 or EcoMold 95 (a beryllium free high thermal conductivity copper alloy) are a good combination for blow molds. Both aluminum and copper have high thermal conductivity, thus increasing productivity. Steel is also used and in some cases even in the soft annealed condition.
Be-Cu Alloy 172
A high strength beryllium copper mold alloy with high thermal conductivity. For applications such as pinch offs and neck rings for blow molds. BeCu Alloy 172 can be supplied in the High Hard(HH) condition at approximately 40 HRC and in the Low Hard (LH) condition at approximately 30 HRC
Uddeholm Corrax
Corrax is a precipitation hardening steel with extremely good corrosion resistance and easy to heat treat. It is used both as mold material and engineering material.
EcoMold 95
A high-strength copper mold alloy supplied at 30 HRC. Copper alloys are suitable mold materials where a combination of high thermal conductivity, and corrosion resistance is needed. Use in neck rings where a hardness in the range of P20 is acceptable, and a beryllium free copper is desired.
Bohler M314 Extra
M314 EXTRA is an improved free-machining stainless steel that is supplied in the prehardened condition at a hardness level of approximately 300 Brinell. This high chromium stainless steel has been alloyed with sulfur to provide excellent machinability in the prehardened condition.
Premium P20
Modified Prehardened mold steel suitable for a wide range of blow molds for plastic. It is supplied at supplied at 290-330 HB. This material conforms to W. Nr. 1.2738.
Uddeholm Ramax
Corrosion resistant holder steel with good machinability, supplied in the prehardened condition up to 340 HB. Excellent machinability and good corrosion resistance reduces tool manufacturing and maintenance costs.
Uddeholm Ramax LH
A mold base steel which exhibits excellent machining properties. It displays good corrosion resistance and is delivered in the pre-hardened condition at approximately 290 HB.
Uddeholm Stavax ESR
Stavax ESR is a corrosion resistant mold steel, with very good polishability. Main applications can be found as insert material for blow molds inserts with demands on high surface finish and where low maintenance is needed. This material conforms to EN X40Cr14. It is close to W. No. 1.2083 / AISI 420 modified.
Uddeholm Mirrax ESR
Mirrax ESR has been developed to meet the industries increased demand on a mold steel with a combination of toughness, corrosion resistance and ability to reach uniform hardness levels in all cross sections. At the same time good surface finishes can be achieved.
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