The difference among steel pipe AISI 1045, steel pipe AISI 5140 and steel pipe AISI 4130
AISI 1045 equivalent materials: SAE 1045, JIS S45C, GOST 45, AFNOR C45, DIN C45K AISI 5140 equivalent materials: DIN 1.7003, DIN 38Cr2, DIN 1.7035, DIN 41Cr4, AFNOR 38Cr2, AFNOR 41Cr4, SAE 5140, JIS SCr440 AISI 4130 equivalent materials: DIN 1.7214, DIN 25CrMo4, SAE 4130