易切削不锈钢:S20300 XM-1 S30300 303 S30310 XM-5 S30323 303Se S30345 XM-6 S41600 416 S41610 XM-6 S41623 416Se S42020 420F S42023 420FSe S44020 440F S44023 440FSe S18200 XM-34 S18235 S41603 S43020 430F S43023 430FSe