Chemical Composition of 316L Stainless Steel

1. 316I element content standard

The chemical composition of 316L stainless steel is mainly Cr, Ni, Fe, etc.

316L is the American standard stainless steel model (brand), the corresponding Japanese standard stainless steel brand is SUS316L, and the national standard stainless steel brand is 022Cr17Ni12Mo2 (see the comparison table of stainless steel material brand).

The requirements for the chemical composition of 316L stainless steel in various national standards are slightly different.

For example, for the nickel content percentage in 316L chemical composition, the Japanese standard 1SG4305 should be between 12-15%, the Chinese national standard GBT24511-2017 should be between 10-14%, and the American ASTM A240 standard should be the same as China’s.

In terms of nickel content requirements of 316L stainless steel, the Japanese standard is higher than the national standard and the American standard.

Cr content of 316 stainless steel is 16-18%, and the requirements for chromium content of 316 stainless steel in national standards are basically the same.

Related reading: 316 vs 316L Stainless Steel

Chemical Composition of 316L Stainless Steel 1

2. 316L Chemical Composition Comparison Table

The iron element (Fe) content of 316 stainless steel is about 69%, and the composition content of 316L stainless steel (other alloy elements except for iron).

See the comparison table of chemical composition content of 316L material for details:

National Standard 316L Stainless Steel Composition Comparison Table (Element Content Ratio)

Standard name

UNS No.

Grade

C

 Mn

P

S

Si

Cr

Ni

Mo

N

American standard ASTM A240M-15a

S31603

316L

0.03

2

0.045

0.03

0.75

16-18

10-14

2-3

0.1

Old China standard GB24511-2009

S31603

022Cr17Ni12Mo2

0.03

2

0.035

0.02

0.75

16-18

10-14

2-3

0.1

New China standard GB/T24511-2017

S31603

022Cr17Ni12Mo2

0.03

2

0.035

0.015

0.75

16-18

10-14

2-3

0.1

Japanese standard JISG4305:2005

SUS316L

0.03

2

0.045

0.03

1

16-18

12-15

2-3

European Standard EN10028-7:2007

1.4404

0.03

2

0.045

0.015

1

16.5-18.5

10-13

2-2.5

0.1

Note: the proportion is a percentage, i.e. “%”;

Except for the indicated range, all the ingredients listed in the table are maximum values;

3. Recommendations for 3161 Stainless Steel Applications

Excluding the differences in production process and technology, the performance and use limit of stainless steel are mainly affected by its chemical element content.

Suggestion: For the selection of stainless steel materials, it is necessary to find qualified and economical steel grades based on material properties, use environment, processing technology, cost budget and other factors.

The element composition of 316L stainless steel is different from that of 304, 321 and other stainless steels, so it shows some special physical and chemical properties, making 316 stainless steel particularly suitable for applications in certain scenarios.

316 chemical composition standard (316l element content table), namely SUS316L, 316L, 022Cr17Ni12Mo2 and 1.4404, refer to the table above.

The chemical composition table of stainless steel 316 material shows that the composition standards of 316L specified by various countries have little difference, and there are only slight differences in the content of individual elements (such as phosphorus, sulfur, silicon, nickel, etc.).

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