When it comes to international steel standards and grades, there are many different systems in use around the world. One useful tool for understanding these different systems is an equivalent steel grades comparison chart, which can show the equivalent grades in different countries' standards. For example, a stainless steel grades comparison chart can show how a grade in the ANSI system in the US compares to a steel grade in the DIN system in Germany or the JIS system in Japan. Understanding these equivalent steel grades is essential for manufacturers that import or export steel products.

The Importance of Steel Standards

Adhering to steel standards set by the American National Standards Institute (ANSI) and their international counterparts is important for several reasons:

1. Quality Assurance

Adhering to ANSI steel standards ensures that the steel products produced by manufacturers meet a certain level of quality and compatibility. This helps to ensure that the products are safe and fit for their intended purpose.

2. Consistency

Adhering to ANSI steel standards ensures that steel products produced by different manufacturers are consistent in terms of composition, properties, and performance. This helps to ensure that the products are interchangeable and can be used together in different applications.

3. Interchangeability

Adhering to ANSI steel standards allows for the interchangeability of steel products produced by different manufacturers. This allows for more efficient use of resources and helps to reduce costs for users.

4. Enhancing Safety

Adhering to ANSI steel standards can help to ensure that steel products are safe to use, which is particularly important in industries such as construction, where failure of a steel component can have serious consequences.

5. Compliance

Adhering to ANSI steel standards is often required by laws and regulations, as well as by industry standards, as a means of demonstrating compliance and protecting public safety, health, and welfare.

6. Competitive Advantage

Adhering to ANSI steel standards can give manufacturers a competitive advantage in the market by demonstrating that their products meet industry standards and have been independently tested and certified.

American Steel Standards

In the United States, there are several organizations that establish standards for steel and other materials. These organizations include:

• American Society of Mechanical Engineers (ASME):

Develops and publishes standards for mechanical engineering, including those related to materials and pressure vessels.

• American National Standards Institute (ANSI):

Coordinates the development of voluntary consensus standards in the US, including those related to steel and other materials.

• American Iron and Steel Institute (AISI):

Develops technical standards and guidelines for steel products in the US.

• Society of Automotive Engineers (SAE):

Develops standards for the aerospace and automotive industries, including those related to steel and other materials.

• American Society for Testing and Materials (ASTM):

Develops and publishes standards for materials, including steel, and test methods.

ANSI and ASTM are two of the most widely recognized organizations in the US, and their standards are often referenced in construction and manufacturing industries. ANSI and ASTM standards are closely related and often overlap, but ANSI standards are more focused on the process of standardization while ASTM standards are more focused on the testing and characterization of materials.

AISI and SAE are more specialized in their approach and focus on specific areas like automotive and aerospace. ASME standards are specific to mechanical engineering and pressure vessels.

European Steel Standards

In Europe, there are several organizations that establish standards for steel and other materials. These organizations include:

• Deutsches Institut für Normung (DIN):

The German Institute for Standardization, which develops and publishes standards for a wide range of products and services in Germany, including those related to steel.

• British Standards Institution (BS):

Develops and publishes standards for products and services in the United Kingdom, including those related to steel.

• Association Française de Normalisation (AFNOR): The French Standardization Association, which develops and publishes standards for products and services in France, including those related to steel.

• Ente Nazionale Italiano di Unificazione (UNI):

The Italian National Standardization Body, which develops and publishes standards for products and services in Italy, including those related to steel.

Each of these organizations has their own set of standards for steel and other materials and are widely recognized in their respective countries. DIN standards are widely used in Germany, BS standards are widely used in UK, AFNOR standards are widely used in France, and UNI standards are widely used in Italy. These standards are often referenced in construction and manufacturing industries in their respective countries.

JIS – Japan Steel Standards

Japanese steel standards are developed and maintained by the Japanese Industrial Standards (JIS) Committee, which is a part of the Japanese Standards Association (JSA). The JIS standards cover a wide range of products and materials, including steels and alloys, and are widely used in Japan as well as other countries. The JIS standards are based on the International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC) standards and are equivalent to the American Society for Testing and Materials (ASTM), American National Standards Institute (ANSI), and Deutsches Institut für Normung (DIN) standards used in other countries. Some of the most commonly used JIS steel standards include JIS G3131 for hot-rolled steel, JIS G3141 for cold-rolled steel, and JIS G3444 for carbon steel tubes.

AS – Australia Steel Standards

Australian steel standards are developed and maintained by Standards Australia, an independent non-government organization. These standards are used in Australia and New Zealand to ensure the quality and safety of various products and materials, including steels and alloys. The Australian steel standards are based on international standards such as International Organization for Standardization (ISO) and International Electrotechnical Commission (IEC) standards and are equivalent to the American Society for Testing and Materials (ASTM), American National Standards Institute (ANSI), British Standards (BS), and Deutsches Institut für Normung (DIN) standards used in other countries. Some of the most commonly used Australian steel standards include AS/NZS 3678 for structural steels, AS 1548 for pressure vessel steels and AS/NZS 1163 for structural steel hollow sections.

Table of Steel Equivalent Grades (EN, SAE/AISI, UNS, DIN, BS, UNI, JIS)

USA	France	Germany	Germany	Italy	Japan	Russia	Spain	Sweden	UK	European Union
AISI	AFNOR	DIN 17006	W.N. 17007	UNI	JIS	GOST	UNE	SIS	BSI	EURONORM
201 1)					SUS 201
301 1)	Z 12 CN 17-07	X 12 CrNi 17 7	1.4310	X 12 CrNi 1707	SUS 301		X 12 CrNi 17-07	23 31	301S21	X 12 CrNi 17 7
302 1)	Z 10 CN 18-09	X 5 CrNi 18 7	1.4319	X 10 CrNi 1809	SUS 302	12KH18N9	X 10 CrNi 18-09	23 31	302S25	X 10 CrNi 18 9
303 1)	Z 10 CNF 18-09	X 10 CrNiS 18 9	1.4305	X 10 CrNiS 1809	SUS 303		X 10 CrNiS 18-09	23 46	303S21	X 10 CrNiS 18 9
303 Se 1)	Z 10 CNF 18-09			X 10 CrNiS 1809	SUS 303 Se	12KH18N10E	X 10 CrNiS 18-09		303S41
304 1)	Z 6 CN 18-09	X 5 CrNi 18 10 X 5 CrNi 18 12	1.4301 1.4303	X 5 CrNi 1810	SUS 304	08KH18N10 06KH18N11	X 6 CrNi 19-10	23 32	304S15 304S16	X 6 CrNi 18 10
304 N 1)				X 5 CrNiN 1810	SUS 304N1
304 H 1)				X 8 CrNi 1910	SUS F 304H		X 6 CrNi 19-10
304 L 1)	Z 2 CN 18-10	X 2 CrNi 18 11	1.4306	X 2 CrNi 1911	SUS 304L	03KH18N11	X 2 CrNi 19-10	23 52	304S11	X 3 CrNi 18 10
	Z 2 CN 18-10-Az	X 2 CrNiN 18 10	1.4311	X 2 CrNiN 1811	SUS 304LN			23 71
305 1)	Z 8 CN 18-12			X 8 CrNi 1812	SUS 305		X 8 CrNi 18-12	23 33	305S19	X 8 CrNi 18 12
	Z 6 CNU 18-10				SUS XM7					X 6 CrNiCu 18 10 4 Kd
309 1)	Z 15 CN 24-13	X 15 CrNiS 20 12	1.4828	X 16 CrNi 2314	SUH 309				309S24	X 15 CrNi 23 13
309 S 1)				X 6 CrNi 2314	SUS 309S	20KH23N18				X 6 CrNi 22 13
310 1)		X 12 CrNi 25 21	1.4845	X 22 CrNi 2520	SUH 310	10KH23N18			310S24
310 S 1)	Z 12 CN 25-20	X 12 CrNi 25 20	1.4842	X 5 CrNi 2520	SUS 310S	20KH25N20S2		23 61		X 6 CrNi 25 20
314 1)	Z 12 CNS 25-20	X 15 CrNiSi 25 20	1.4841	X 16 CrNiSi 2520						X 15 CrNiSi 25 20
316 1)	Z 6 CND 17-11	X 5 CrNiMo 17 12 2	1.4401	X 5 CrNiMo 1712	SUS 316		X 6 CrNiMo 17-12-03	23 47	316S31	X 6 CrNiMo 17 12 2
316 1)	Z 6 CND 17-12	X 5 CrNiMo 17 13 3	1.4436	X 5 CrNiMo 1713	SUS 316		X 6 CrNiMo 17-12-03	23 43	316S33	X 6 CrNiMo 17 13 3
316 F 1)		X 12 CrNiMoS 18 11	1.4427
316 N 1)					SUS 316N
316 H 1)				X 8 CrNiMo 1712	SUS F 316H		X 5 CrNiMo 17-12
316 H 1)				X 8 CrNiMo 1713		03KH17N14M2	X 6 CrNiMo 17-12-03
316 L 1)	Z 2 CND 17-12	X 2 CrNiMo 17 13 2	1.4404	X 2 CrNiMo 1712	SUS 316L		X 2 CrNiMo 17-12-03	23 48	316S11	X 3 CrNiMo 17 12 2
	Z 2 CND 17-12-Az	X 2 CrNiMoN 17 12 2	1.4406	X 2 CrNiMoN 1712	SUS 316LN	03KH16N15M3
316 L 1)	Z 2 CND 17-13	X 2 CrNiMo 18 14 3	1.4435	X 2 CrNiMo 1713			X 2 CrNiMo 17-12-03	23 53	316S13	X 3 CrNiMo 17 13 3
	Z 2 CND 17-13-Az	X 2 CrNiMoN 17 13 3	1.4429	X 2 CrNiMoN 1713		08KH17N13M2T 10KH17N13M2T		23 75
	Z6 CNDT 17-12	X 6 CrNiMoTi 17 12 2	1.4571	X 6 CrNiMoTi 1712		08KH17N13M2T 10KH17N13M2T	X 6 CrNiMoTi 17-12-03	23 50	320S31	X 6 CrNiMoTi 17 12 2
		X 10 CrNiMoTi 18 12	1.4573	X 6 CrNiMoTi 1713		08KH16N13M2B	X 6 CrNiMoTi 17-12-03		320S33	X 6 CrNiMoTI 17 13 3
	Z 6 CNDNb 17-12	X 6 CrNiMoNb 17 12 2	1.4580	X 6 CrNiMoNb 1712		09KH16N15M3B				X 6 CrNiMoNb 17 12 2
		X 10 CrNiMoNb 18 12	1.4583	X 6 CrNiMoNb 1713						X 6 CrNiMoNb 17 13 3
317 1)				X 5 CrNiMo 1815	SUS 317			23 66	317S16
317 L 1)	Z 2 CND 19-15	X 2 CrNiMo 18 16 4	1.4438	X 2 CrNiMo 1815	SUS 317L			23 67	317S12	X 3 CrNiMo 18 16 4
317 L 1)	Z 2 CND 19-15	X 2 CrNiMo 18 16 4	1.4438	X 2 CrNiMo 1816	SUS 317L			23 67	317S12	X 3 CrNiMo 18 16 4
330 1)	Z 12NCS 35-16	X 12 NiCrSi 36 16	1.4864		SUH 330	08KH18N10T
321 1)	Z 6 CNT 18-10	X 6 CrNiTi 18 10 X 12 CrNiTi 18 9	1.4541 1.4878	X 6 CrNiTi 1811	SUS 321	12KH18N10T	X 6 CrNiTi 18-11	23 37	321S31	X 6 CrNiTi 18 10
321 H 1)				X 8 CrNiTi 1811	SUS 321H		X 7 CrNiTi 18-11		321S20
329 1)		X 8 CrNiMo 27 5	1.4460		SUS 329J1	08KH18N12B		23 24
347 1)	Z 6 CNNb 18-10	X 6 CrNiNb 18 10	1.4550	X 6 CrNiNb 1811	SUS 347		X 6 CrNiNb 18-11	23 38	347S31	X 6 CrNiNb 18 10
347 H 1)				X 8 CrNiNb 1811	SUS F 347H		X 7 CrNiNb 18-11
904L 1)	Z 12 CNDV 12-02		1.4939
		X 20 CrNiSi 25 4	1.4821
UNS31803 2)		X 2 CrNiMoN 22 5	1.4462
UNS32760 2)	Z 3 CND 25-06Az	X 3 CrNiMoN 25 7	1.4501			12Kh13
403 3)	Z 12 C 13	X 6 Cr 13 X 10 Cr 13 X 15 Cr 13	1.4000 1.4006 1.4024	X 12 Cr 13	SUS 403		X 6 Cr 13	23 02	403S17	X 10 Cr 13 X 12 Cr 13
405 3)	Z 6 CA 13	X 6 CrAl 13	1.4002	X 6 CrAl 13	SUS 405		X 6 CrAl 13		405S17	X 6 CrAl 13
	Z 8 CA 7	X 10 CrAl 7	1.4713			10Kh13SYu				X 10 CrAl 7
		X 10 CrAl 13	1.4724	X 10 CrAl 12		15Kh18SYu
		X 10 CrAl 18	1.4742							X 10 CrSiAl 18
409 3)	Z 6 CT 12	X 6 CrTi 12	1.4512	X 6 CrTi 12	SUH 409				409S19	X 5 CrTi 12
				X 2 CrTi 12		12Kh13
410 3)	Z 10 C 13 Z 12 C 13	X 6 Cr 13 X 10 Cr 13 X 15 Cr 13	1.4000 1.4006 1.4024	X 12 Cr 13	SUS 410	08Kh13	X 12 Cr 13	23 02	410S21	X 12 Cr 13
410 S 3)	Z 6 C 13	X 6 Cr 13	1.4000	X 6 Cr 13	SUS 410S			23 01	403S17	X 6 Cr 13
414 3)