420/D2
420/D2
(OP)
I have an application for a tool where the corrosion resistance of D2 steel is proving a problem.
A hardenable stainless such as 420 should be hard enough and at least let us avoid plating. The environment is industrial, humid and mildly corrosive (China).
A supplier put me on to the crucible 420MQ which is C0.38 Mn0.46 Si0.4 Cr13.6 V0.3 as a good corrosion resistant option.
Only problem is the supplier is in Europe so I need a European steel reference.
I think a 420 would equivalent be fine, does anyone know of a German equivalent?
A hardenable stainless such as 420 should be hard enough and at least let us avoid plating. The environment is industrial, humid and mildly corrosive (China).
A supplier put me on to the crucible 420MQ which is C0.38 Mn0.46 Si0.4 Cr13.6 V0.3 as a good corrosion resistant option.
Only problem is the supplier is in Europe so I need a European steel reference.
I think a 420 would equivalent be fine, does anyone know of a German equivalent?





RE: 420/D2
Uddehlom makes Mirrax 40 (and some ESR options for this chem), and other tool steel makes have their versions as well.
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P.E. Metallurgy, Plymouth Tube
RE: 420/D2
RE: 420/D2
I have also heard Stavax may work.
RE: 420/D2
http://www.crucible.com/eselector/prodbyapp/stainl...
Maui
RE: 420/D2
Sounds like the easiest one for them to try is going to be Bohler N695 extra or 1.4125.
They are being told locally the heat treatment/hardening reduces the corrosion resistnace but I'm told by other sources if it is tempered correctly this shouldn't knock it down too much.
Also, polished surfaces and passivation can help. I need to check how these steel can be cleaned without damaging them.
RE: 420/D2
Using higher temperature tempers (lower hardness conditions maximizes the corrosion resistance.
Good mechanical finishing (usually after a pickle treatment)followed by passivation is the best course.
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P.E. Metallurgy, Plymouth Tube