Heat Resistant Stainless Steels Cast Specifications Wrought Specifications Atlas Alloy Grade ASTM UNS AISI UNS   253MATM       S30815 933 CE30 A743 J93423 312 S31200 932 CH10 A351, A743 J93401 309 S30900 930 CH20 A351, A743 J93402 309 S30900 930 CK20 A351, A743 J94202 310 S31000 940 HH A297 J93503 309 S30900 935 HK A297 J94204 310 S31000 942 HN A297 J94213     934 HT A297 N08605 330   946 RA85HTM       S30615 931 253MATM are trademarks of Avesta Polarit AB, used with permission. RA85HTM are trademarks of Rolled Alloys, used with permission. Atlas Castings & Technology is available to work with you to develop an alloy which meets your specific application. For more information, please contact us at 253-475-4600, send a fax to 253-473-8710 or send an e mail from the Contact US.