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Types of stainless steel

Transfers of standards
Group	DIN	ČSN	AISI
A1	1.4305	-	303
A2	1.4301	17240	304
A4	1.4401	17346	316

Austenitic steel with a special resistance to chlorides (eg use in swimming pools)
Group of material	Number of material	DIN / ISO / MARK
1.4439	X2XrNiMoN17-13-5	DIN EN 10088
1.4539	X1NiCrMoCu25-20-5	DIN EN 10088
1.4529	X1NiCrMoCuN25-20-7	DIN EN 10088
1.4462¹⁾	X2CrNiMoN22-5-3	DIN EN 10088

1) Austenitic-ferritic steel

Special materials ASTM / ASME / AISI
Ferritic steel	ASTM 193 B5; B6; B6X; B7; B7M; B16
	ASTM 194 Grade 2H; 2HM; 4; 7; 7M
	ASTM 320 L7; L7M atd.
Stainless steel	ASTM 193 B8; B8A; B8C; B8CA; B8M; B8T; B8MA; B8M2; atd.
	ASTM 194 Grade 8; 8C; 8M; 8T; atd.
	ASTM 320 B8; B8A; B8C; B8CA; B8M; B8T; atd.
	ASTM A 453 Grade 660A/B
	AISI 316 Ti; 304L; 316L; 310; 347; 410; 420; 431

Materials and Strength groups for Stainless and acid resistant steel
Group of material	Number of material	DIN / ISO / MARK
A1-50/70	1.4305	DIN ISO 3506 04/98
A2-50/70	1.4301; 1.4306; 1.4541; 1.4550	DIN ISO 3506 04/98
A3-50/70	1.4541; 1.4550	DIN ISO 3506 04/98
A4-50/70	1.4401; 1.4404; 1.4571	DIN ISO 3506 04/98
A5-50/70	1.4571	DIN ISO 3506 04/98
C1-50/70/110	1.4021	DIN ISO 3506 04/98
C3-80	1.4057	DIN ISO 3506 04/98
C4-50/70	1.4104	DIN ISO 3506 04/98
F1-45/60	1.4016	DIN ISO 3506 04/98

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