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Equivalent material grades

Quickly find equivalent steel, stainless, aluminium and cast iron grades between European (EN), Japanese (JIS), American (ASTM, AISI), Chinese (GB) and Russian (GOST) standards. Type any grade into the search box, e.g. SS400, 1.4301, A516, S45C.

Note: "equivalent" means approximately similar in chemical composition and mechanical properties, not identical. When substituting materials for load-bearing structures, pressure vessels, pressure piping or parts with impact-test requirements, compare the material certificate with the design requirements and obtain approval from the design engineer and the client. An asterisk * marks pairs with significant differences, see the questions below.

Hot rolled structural steel

9 grades

EN 10025-2 and equivalent grades; Re is the minimum yield strength for thickness ≤ 16 mm.

EN 10025-2	Material no.	Old DIN	JIS G3101/G3106	ASTM	GB/T 700, 1591 (TQ)	GOST / TCVN	Re (MPa)
S235JR	1.0038	St37-2	SS400*	A283 Gr.C	Q235B	CT3 / CT38	235
S235J2	1.0117	St37-3N	SM400B	–	Q235D	–	235
S275JR	1.0044	St44-2	SS400*	A36*	Q275B	–	275
S275J2	1.0145	St44-3N	SM400C	–	Q275D	–	275
S355JR	1.0045	St52-3	SM490A	A572 Gr.50	Q355B (formerly Q345B)	09Г2С	355
S355J2	1.0577	St52-3N	SM490B	A572 Gr.50 / A992	Q355D	–	355
S355K2	1.0596	–	SM490C	–	Q355D	–	355
E295	1.0050	St50-2	SS490	–	Q275	CT5	295
E335	1.0060	St60-2	–	–	–	CT6	335

No matching grade in this group.

Shipbuilding steel plate

13 grades

Shipbuilding steel grades are the same in name and properties across classification societies (LR, DNV, ABS, BV, NK, KR, CCS, VR).

Grade	Re (MPa)	Impact test temperature	LR / ABS / BV / NK / VR	DNV
A	235	–	A	NV A
B	235	0 °C	B	NV B
D	235	−20 °C	D	NV D
E	235	−40 °C	E	NV E
AH32	315	0 °C	AH32	NV A32
DH32	315	−20 °C	DH32	NV D32
EH32	315	−40 °C	EH32	NV E32
AH36	355	0 °C	AH36	NV A36
DH36	355	−20 °C	DH36	NV D36
EH36	355	−40 °C	EH36	NV E36
AH40	390	0 °C	AH40	NV A40
DH40	390	−20 °C	DH40	NV D40
EH40	390	−40 °C	EH40	NV E40

No matching grade in this group.

Pressure vessel and boiler plate

8 grades

EN 10028-2 (elevated temperature) and equivalent grades.

EN 10028	Material no.	ASTM / ASME	JIS	GB 713 (TQ)	Re (MPa)
P235GH	1.0345	A285 Gr.C / A516 Gr.55	SB410 / SPV235	Q245R	235
P265GH	1.0425	A516 Gr.60	SB410 / SPV235	Q245R	265
P295GH	1.0481	A516 Gr.65	SB450	–	295
P355GH	1.0473	A516 Gr.70*	SB480 / SPV355	Q345R	355
P355NL1	1.0566	A537 Cl.1 / A662 Gr.C	–	Q345R	355
16Mo3	1.5415	A204 Gr.B	SB450M	–	275
13CrMo4-5	1.7335	A387 Gr.12 Cl.2	SCMV2	15CrMoR	300
10CrMo9-10	1.7380	A387 Gr.22 Cl.2	SCMV4	12Cr2Mo1R	310

No matching grade in this group.

Steel pipe

7 grades

Seamless pressure pipe and oil and gas line pipe.

EN 10216	Material no.	ASTM / ASME	JIS	GB (TQ)
P235GH	1.0345	A106 Gr.A / A53 Gr.A	STPG370 / STB340	10 (GB 3087)
P265GH	1.0425	A106 Gr.B / A53 Gr.B	STPG370 / STS370	20 (GB/T 8163, GB 3087)
P265NL	1.0453	A333 Gr.6	STPL380	–
16Mo3	1.5415	A335 P1	STPA12	–
13CrMo4-5	1.7335	A335 P11	STPA23	15CrMoG
10CrMo9-10	1.7380	A335 P22	STPA24	12Cr2MoG
X10CrMoVNb9-1	1.4903	A335 P91	STPA28	10Cr9Mo1VNbN

No matching grade in this group.

Line pipe API 5L / ISO 3183

9 grades

API 5L grades and ISO 3183 grades (formerly EN 10208-2) correspond directly; the number in the ISO name is the minimum Re (MPa).

API 5L	ISO 3183 / EN 10208-2	Re (MPa)	Rm (MPa)
Gr.B	L245	245	415
X42	L290	290	415
X46	L320	320	435
X52	L360	360	460
X56	L390	390	490
X60	L415	415	520
X65	L450	450	535
X70	L485	485	570
X80	L555	555	625

No matching grade in this group.

Carbon steels for machining

5 grades

Quenched and tempered steels EN 10083-2 and equivalents.

EN 10083-2	Material no.	JIS G4051	AISI / SAE	GB/T 699 (TQ)	GOST
C22	1.0402	S20C	1020	20	20
C35	1.0501	S35C	1035	35	35
C45	1.0503	S45C	1045	45	45
C55	1.0535	S55C	1055	55	55
C60	1.0601	S58C	1060	60	60

No matching grade in this group.

Alloy steels for machining

6 grades

Quenched and tempered, spring and bearing steels.

EN	Material no.	JIS	AISI / SAE	GB/T 3077 (TQ)	GOST
41Cr4	1.7035	SCr440	5140	40Cr	40Х
34CrMo4	1.7220	SCM435	4135	35CrMo	35ХМ
42CrMo4	1.7225	SCM440	4140	42CrMo	–
36CrNiMo4 / 34CrNiMo6	1.6511 / 1.6582	SNCM439	4340	40CrNiMoA	40ХН2МА
51CrV4	1.8159	SUP10	6150	50CrVA	50ХФА
100Cr6	1.3505	SUJ2	52100	GCr15	ШХ15

No matching grade in this group.

Stainless steel

21 grades

Stainless grades by AISI and equivalent standards.

AISI	UNS	EN (name)	EN material no.	JIS	GB/T 20878 (TQ)	GOST
201	S20100	X12CrMnNiN17-7-5	1.4372	SUS201	12Cr17Mn6Ni5N	–
301	S30100	X10CrNi18-8	1.4310	SUS301	12Cr17Ni7	–
303	S30300	X8CrNiS18-9	1.4305	SUS303	Y12Cr18Ni9	–
304	S30400	X5CrNi18-10	1.4301	SUS304	06Cr19Ni10	08Х18Н10
304L	S30403	X2CrNi18-9 / X2CrNi19-11	1.4307 / 1.4306	SUS304L	022Cr19Ni10	03Х18Н11
309S	S30908	X12CrNi23-13	1.4833	SUS309S	06Cr23Ni13	–
310S	S31008	X8CrNi25-21	1.4845	SUS310S	06Cr25Ni20	20Х23Н18
316	S31600	X5CrNiMo17-12-2	1.4401	SUS316	06Cr17Ni12Mo2	–
316L	S31603	X2CrNiMo17-12-2	1.4404	SUS316L	022Cr17Ni12Mo2	03Х17Н14М3
316Ti	S31635	X6CrNiMoTi17-12-2	1.4571	SUS316Ti	06Cr17Ni12Mo2Ti	10Х17Н13М2Т
321	S32100	X6CrNiTi18-10	1.4541	SUS321	06Cr18Ni11Ti	08Х18Н10Т
347	S34700	X6CrNiNb18-10	1.4550	SUS347	06Cr18Ni11Nb	08Х18Н12Б
904L	N08904	X1NiCrMoCu25-20-5	1.4539	SUS890L	015Cr21Ni26Mo5Cu2	–
2205 (duplex)	S32205 / S31803	X2CrNiMoN22-5-3	1.4462	SUS329J3L	022Cr23Ni5Mo3N	–
2507 (super duplex)	S32750	X2CrNiMoN25-7-4	1.4410	SUS327L1	022Cr25Ni7Mo4N	–
409	S40900	X2CrTi12	1.4512	SUH409L	022Cr11Ti	–
410	S41000	X12Cr13	1.4006	SUS410	12Cr13	12Х13
420	S42000	X20Cr13 / X30Cr13	1.4021 / 1.4028	SUS420J1 / SUS420J2	20Cr13 / 30Cr13	20Х13 / 30Х13
430	S43000	X6Cr17	1.4016	SUS430	10Cr17	12Х17
431	S43100	X17CrNi16-2	1.4057	SUS431	17Cr16Ni2	20Х17Н2
630 (17-4PH)	S17400	X5CrNiCuNb16-4	1.4542	SUS630	05Cr17Ni4Cu4Nb	–

No matching grade in this group.

Aluminium alloys

9 grades

The 4-digit Aluminum Association numbers are shared by JIS, GB and EN.

AA (USA)	EN AW	EN (chemical name)	JIS	GB/T 3190 (TQ)	Notes
1050	EN AW-1050A	Al99.5	A1050	1050A	Nearly pure aluminium
1100	EN AW-1100	Al99.0Cu	A1100	1100	Commercially pure aluminium
3003	EN AW-3003	AlMn1Cu	A3003	3003	Roofing sheet, tanks
5052	EN AW-5052	AlMg2.5	A5052	5052	Body panels, seawater resistant
5083	EN AW-5083	AlMg4.5Mn0.7	A5083	5083	Ship hulls, good weldability
6061	EN AW-6061	AlMg1SiCu	A6061	6061	Machine parts, structures
6063	EN AW-6063	AlMg0.7Si	A6063	6063	Aluminium extrusion profiles
6082	EN AW-6082	AlSi1MgMn	–	6082	Load-bearing structures
7075	EN AW-7075	AlZn5.5MgCu	A7075	7075	High strength

No matching grade in this group.

Cast iron

6 grades

Grey cast iron and ductile iron.

EN 1561 / EN 1563	Old DIN	JIS	ASTM	GB (TQ)
EN-GJL-200	GG20	FC200	A48 Cl.30	HT200
EN-GJL-250	GG25	FC250	A48 Cl.40	HT250
EN-GJL-300	GG30	FC300	A48 Cl.45	HT300
EN-GJS-400-15	GGG40	FCD400	A536 60-40-18	QT400-15
EN-GJS-500-7	GGG50	FCD500	A536 70-50-05	QT500-7
EN-GJS-600-3	GGG60	FCD600	A536 80-55-06	QT600-3

No matching grade in this group.

Frequently asked questions

What is SS400 equivalent to?

SS400 (JIS G3101, Re ≥ 245 MPa) is commonly used in place of S235JR or S275JR (EN), A36 (ASTM), Q235B (China) and CT3 (GOST). SS400 does not specify C and Mn content or impact testing, so it is not fully equivalent to EN grades with J0 or J2 suffixes.

What is SUS304 in European standards?

SUS304 (JIS) = AISI 304 = UNS S30400 = EN 1.4301 (X5CrNi18-10) = GB 06Cr19Ni10 (old designation 0Cr18Ni9).

What is S45C equivalent to?

S45C (JIS) is equivalent to C45 (EN, no. 1.0503), AISI 1045 and grade 45 (GB, GOST).

Can A516 Gr.70 replace P355GH?

Both grades have similar tensile strength (Rm 485–620 MPa) but the yield strength of A516 Gr.70 is only 260 MPa, lower than P355GH (355 MPa). A substitution requires re-checking the pressure vessel calculation.

What are Q235B and Q355B equivalent to?

Q235B ≈ S235JR, SS400, A283 Gr.C. Q355B (called Q345B before 2018) ≈ S355JR, SM490A, A572 Gr.50.

What is equivalent to 42CrMo4?

42CrMo4 (EN 1.7225) ≈ SCM440 (JIS) ≈ AISI 4140 ≈ 42CrMo (GB).