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Has anybody had any prior experience in this material? We have cast this part twice in as many years, last year we reached a hardness of ~50HRC, this year we are only achieving 44HRC (with HT). We have to fan cool, as an oil quench has cracked these parts in the past. C% is at the high end...

I have a customer requiring a magatteaux spec FMU11. Does anyone have any experience with this material, and how to go about heat treating to achieve a hardness of 50HRC? C - 1.25% Cr - 12% Si - 0.45% Mn - 0.55% S - <0.05% P - <0.05%

Good day all, I was wondering if anyone may perhaps know of a cast equivalent of the BS970 605M36 (EN16) spec? A Mn/Mo steel with approx. 0.35% C Thanks kindly,

Arunmrao, thanks for your reply. The only information i have to hand is that it is a 'runner wheel', I would suspect we are looking for reasonable abrasion resistance. I will try to find more information presently.

A quick one, does anyone know of any cast equivalents to EN10025 S235? Thanks kindly

Thanks kindly Arunmrao. That may well come in very handy. I think the customer has been given the option of a French spec Z80CM or something that was very similar to their original spec, but with slightly higher nickel (maybe this is what the original supplier was aiming for).

Thanks kindly I'll have a look into that and I'll be sure to let you know

Just the rollers for now, and yes I believe your summation is correct with regards to transportation of clinker

Metengr I have been led to believe that an indent of a drag chain may previously have been left when this part (a roller) was issued by a previous supplier. Arunmrao I don't really want to be having to hard face these items.

Are there any materials anyone could recommend for being at service a maximum of 500°C. The part in question will be in contact with other cast parts and so would require some form of wear resistance. Would an as-cast 309C40 25/12 material be ideal in such situations?

bcd, I haven't actually been down this route yet, but think it may be the next step. I wanted to be sure there was nothing untoward in our melting process. I can't imagine the tooling is an issue, however, due to the fact the same tooling is used for both our castings and our competitors castings.

Good day! My company have been producing castings in CF8M and WCB material for a few years now. The jobs in particular require a drilling and tapping operation, and this has been causing one or two issues for the machinists (in both materials). Compared to our competitors castings, our own...

Thanks kindly Ed. Muchly appreciated.

Can anyone tell me what the main advantages would be of having a 7%Cr martensitic material instead of BW10? I am aware they both have reasonable wear resistance, and suspect 7%Cr is more expensive. Is 7%Cr a more 'castable' material? Is there a big difference when it comes to having them in...

I will have to ask the question as to what kind of service these parts will be performing. I don't think friction welding would be a viable option for them however. With mild steel being involved I am also of the thought that maybe it is not high temperature environment. This customer does...

Thanks kindly metengr, always good to have a second opinion

I have a Norwegian customer who wishes to weld a mild steel plate onto the front of a 25/12 casting. Does anyone have any idea what type of consumable they should be using? My first instincts would be to go for something as close to the 25/12, such as a 309, but i am not sure what effect, if...

I was wondering if anyone was aware of the French metal spec Z40 CMn, and if so, has any relevant information on it they are willing to share. I am under the assumption that it is an AFNOR specification, and believe it to be a 20-9-5 material. Thanks

It's a clinker hammer, approx 6" max thickness. So far 930° air cool, tempered at around 550° air cooled.

Does anyone have an idea of how (if possible) to get 42-50HRC, 8J impact and 1200-1400MPa UTS from a material with 3%Cr, 0.45%C & >1%Mo? I have thus far managed to achieve the hardness, but approx. half the required UTS with a hardening/tempering approach.