Question 1

Can I substitute grades 1-to-1 from this table?

Accepted Answer

Equivalents are close, not identical. For critical parts always cross-check exact specs (post-HT hardness, impact toughness, narrow composition windows) against the certificate and run incoming inspection if needed.

Question 2

Why does one GOST grade map to multiple AISI grades?

Accepted Answer

Standards are organized differently: GOST sets a fixed-composition grade, AISI often describes a group with a range of alloying. One GOST may overlap 2-3 close AISI grades — pick by actual composition from the certificate.

Question 3

Where do I get the full chemical composition?

Accepted Answer

Our reference shows typical composition of major elements. Full spec composition (including S, P, Cu, As, residuals) is in the active standards: GOST 1050, GOST 4543, GOST 5632, ASTM A36/A572/A240, etc. For procurement, request the supplier's certificate with exact values.

Question 4

Do you machine parts from any of the listed grades?

Accepted Answer

Yes — turning, milling, cutting, and welding for all grades in the reference. We stock common ones (St3, St45, 09G2S, 12X18N10T, D16, AISI 304/316) as blanks for fast start.

ГОСТ	AISI	DIN	EN	JIS	·
Ст3 / Ст3сп	A36	S235JR	S235JR	SS400	+
Сталь 20	1020	C22	C22E	S20C	+
Сталь 35	1035	C35	C35E	S35C	+
Сталь 45	1045	C45	C45E	S45C	+
Сталь 50	1050	C50	C50E	S50C	+
09Г2С	A572 Gr.50	S355J2	S355J2+N	SM490	+
17Г1С	A572 Gr.45	S345	—	—	+
40Х	5140	41Cr4	41Cr4	SCr440	+
30ХГСА	4130 (close)	30CrMnSi6	—	—	+
38ХС	—	38SiCr3	—	—	+
У8А	W1-0.8C	C80W1	—	SK5	+
У10А	W1-1.0C	C100W1	—	SK3	+
У12А	W1-1.2C	C125W1	—	—	+
Х12МФ	D2	X153CrMoV12	X153CrMoV12	SKD11	+
ХВГ	O1	100MnCrW4	—	SKS3	+
9ХС	—	90CrSi5	—	SKS31	+
ШХ15	52100	100Cr6	100Cr6	SUJ2	+
12Х18Н10Т	321	1.4541	X6CrNiTi18-10	SUS321	+
08Х18Н10	304	1.4301	X5CrNi18-10	SUS304	+
03Х18Н11	304L	1.4307	X2CrNi18-9	SUS304L	+
10Х17Н13М2Т	316Ti	1.4571	X6CrNiMoTi17-12-2	SUS316Ti	+
03Х17Н14М3	316L	1.4404	X2CrNiMo17-12-2	SUS316L	+
20Х13	420	1.4021	X20Cr13	SUS420J1	+
30Х13	420 (mod)	1.4028	X30Cr13	SUS420J2	+
40Х13	420HC	1.4031	X39Cr13	SUS420J2	+
95Х18	440C	1.4125	X105CrMo17	SUS440C	+
Д16 / Д16Т	2024	AlCu4Mg1	EN AW-2024	A2024	+
АМг5	5056	AlMg5	EN AW-5056	A5056	+
АМг6	5083	AlMg4.5Mn	EN AW-5083	A5083	+
АД31	6063	AlMgSi0.5	EN AW-6063	A6063	+
АК6	2014 (close)	AlCu4SiMg	—	—	+
Л63	C2700 / C28000	CuZn37	CW508L	C2700	+
ЛС59-1	C36000	CuZn39Pb3	CW614N	C3604	+
ЛЖМц59-1-1	—	CuZn40MnFe	—	—	+
БрАЖ9-4	C95400	CuAl9Fe3	CW303G	—	+
БрОЦС5-5-5	C83600	CuSn5Zn5Pb5	CC491K	—	+
БрКМц3-1	—	CuSi3Mn1	—	—	+
М1	C11000	Cu-ETP	CW004A	C1100	+
65Г	1066	Ck67	C67E	S65C	+

Steel and alloy grade equivalents

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