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hi all the elongation was 18%, the requirement was 11%. its the .2 and tensiles we are having trouble with.

thread367-313448 hi Guys we have had tensile reults for ASTM A148 GR130-115. the parts were quench and tempered, but failed. is there a recommended heat treatment for this please. the results for .2% were 670, spec requires 795 and tesiles were 726, spec requires 895. these were heat...

hi all i having an issue with some carbon material which has been bought in as 26kg blends. these are melted down in a 30kg inverted furnace and cast. after cast sample analysis is taken,the carbon levels are way below the spec. bought in charge Carbon = 0.020 cast sample analysis = 0.016...

further investigation was conducted at the lab on the test piece and sample "displayed an austenitic microstructure typical of 1.4849 steel". i have tried another keel block sample and the results were not much better. i have attached a copy of the micro examination...

hi Guys i hope someone can help me out with an issue with material code 1.4849. our customer has requested we cast test bars and have them tensile tested to meet the required spec: Tensile :420 MPa 0.2% Yield:220 Elongation: 4% the results that were received from the test house are: Tensile...

thank you jaway809 & metengr Our customer has since renewed his order and decided to go with a new material more relevant to newer BS standard. thans to all :)

thanks for your help mrfailure. very much appreciated.

hi Guys Can anyone help me out with a material grade. a customer is enquiring a casting in GRADE BS1456 B2. this is a new one on me..... does anyone have a CHEMICAL & MECHANICAL for this grade please? cheers

hi Guys i am after a chemical and mechanicals for a cast spec for UNS S32760. any ideas anyone?

hi Guys can someone help me out with a casting spec please. the material ASTM A494 M-35-1. does anyone know the chemical and mechanical specifications for casting is? cheers

hi guys does anyone know the correct heat treatment for a carbon material BS3100 BW2? At the moment we are carrying out 2 heat treatments 920 c 2 hours air cool then 620 c 4 hours furnace cool the problem is that half of the cast batch is rejected at machining because the blades of the...

thanyou guys a lot of the time even the customer is unsure of what specification they need, they just state the material and think we know all about it. we,ll ask them about being supplied as cast. cheers lak

hi Guys thanks for your help with 1.4509 heat treatment. we have a customer enquiry requesting a price for HK30 material castings. but, again we do not know what heat treatment is required. can anyone help please? cheers lak

thankyou guys ... you all have been a great help. we had a sample and bar heat treated externally @ 790c. the results are 0.2 proof = 254 tensile = 549 elongation = 19 the only downside is the customer will not be placing an order due to pricing, he,s...

thankyou Martinos the mechanicals are for castings... i will try out a tensile test on Monday, and let you know what the results are. cheers lakk

our customer requires the following: proof stress @ .2 = 200 - 250 tensile - 430 - 630 elongation - 18 min we have no idea as what kind of heat treatment is needed to obtain these results. any ideas will be greatly appreciated. lak

does anyone know what the heat treatment of for material 1.4509

you have given me alot to think about. i will follow up with the way the castings are weld repaired, see how they look after pickling which is carried out offsite. As for minimizing the occurrence of surface defects, that's another issue altogether, most castings need touching up a little...

we have a standard - MSS SP-55 where the casting has to pass a visual inspection before it is passed onto the customer. so we weld up any defects to smooth up the surface area , which will be machined out by the customer. but this issue is has only started a few months ago , no process changes...

HI GUYS WE ARE HAVING SOME ISSUES WITH OUR 316/CF8M CASTINGS. AFTER THE PICKLING AND PASSIVATING PROCESS HAS TAKEN PLACE, THE AREAS WHERE THEY HAVE BEEN COSMETICALLY WELDED, THE WELD MARKS SHOW UP AS BLACK PATCHES AND ARE MORE PROMINENT THAN BEFORE THEY WERE TREATED. THIS PROBLEM AT THE...