Chemical Requirements

Grade	UNS Designation^A
Grade	UNS Designation^A	Carbon max^B	Manganese max	Phosphorus max	Sulfur max	Silcon max	Chromium	Nickel	Molybdenum	Titanium	Columbium Plus Tantalum	Nitrogen max
TP304L	S30403	0.030	2.00	0.045	0.030	1.00	18.00-20.00	8.00-13.00	—	—	—	0.10
TP316L	S31603	0.030	2.00	0.045	0.030	1.00	16.00-18.00	10.00-15.00	2.00-3.00	—	—	0.10
TP317L	S31703	0.030	2.00	0.045	0.030	1.00	18.00-20.00	11.00-14.00	3.00-4.00	—	—	0.10
TP321	S32100	0.080	2.00	0.045	0.030	1.00	17.00-19.00	9.00-12.00	—	C	—	—
TP347	S34700	0.080	2.00	0.045	0.030	1.00	17.00-19.00	9.00-13.00	—	—	D	—

^A New designation established in accordance with ASTM E527 and SAE J1086, Recommended Practice for Numbering Metals and Alloys (UNS).

^B The carbon analysis shall be reported to the nearest 0.01 percent except for the low carbon (0.030) types, that shall be reported to the nearest 0.001 percent.

^C The titanium content shall be not less than five times the carbon content and not more than 0.70 percent.

^D The columbium plus tantalum content shall be not less than ten times the carbon content and not more than 1.10 percent.

STAINLESS STEEL
CHEMICAL REQUIREMENTS

Grade	UNS Designation^A	Composition %
Grade	UNS Designation^A	Carbon max^B	Manganese max^B	Phosphorus max	Sulfer max	Silicon	Nickel	Chromium	Molybdenum	Titanium	Columbium plus Tantalum	Tantalum max	Nitrogen^C	Vanadium	Copper	Cenum
TP304	S30400	0.08	2.00	0.040	0.030	0.75 max	8.00-11.0	18.0-20.0	—	—	—	—	—	—	—	—
TP304H	S30409	0.04-0.10	2.00	0.040	0.030	0.75 max	8.00-11.0	18.0-20.0	—	—	—	—	—	—	—	—
TP304L	S30403	0.035^D	2.00	0.040	0.030	0.75 max	8.00-13.0	18.0-20.0	—	—	—	—	—	—	—	—
TP304N	S30451	0.08	2.00	0.040	0.030	0.75 max	8.00-11.0	18.0-20.0	—	—	—	—	0.10-0.16	—	—	—
TP304LN	S30453	0.035	2.00	0.040	0.030	0.75 max	8.00-11.0	18.0-20.0	—	—	—	—	0.10-0.16	—	—	—
TP309	S30900	0.15	2.00	0.040	0.030	0.75 max	12.0-15.0	22.0-24.0	—	—	—	—	—	—	—	—
TP309Cb	S30904	0.08	2.00	0.045	0.030	0.75 max	12.0-16.0	22.0-24.0	0.75 max	—	10 x C Min 1.110 max	—	—	—	0.75 max	—
TP 309S	S30908	0.08	2.00	0.045	0.030	0.75 max	12.0-15.0	22.0-24.0	0.75 max	—	—	—	—	—	0.75 max	—
TP310	S31000	0.15	2.00	0.040	0.030	0.75 max	19.0-22.0	24.0-26.0	—	—	—	—	—	—	—	—
TP310Cb	S31040	0.08	2.00	0.045	0.030	0.75 max	19.0-22.0	24.0-26.0	0.75 max	—	10 x C min. 1.10 max	—	—	—	0.75 max	—
TP310S	S31008	0.08	2.00	0.045	0.030	0.75 max	19.0-22.0	24.0-26.0	0.75 max	—	—	—	—	—	0.75 max	—
TP316	S31600	0.08	2.00	0.040	0.030	0.75 max	11.0-14.0^D	16.0-18.0	2.00-3.00	—	—	—	—	—	—	—
TP316H	S31609	0.04-0.10	2.00	0.040	0.030	0.75 max	11.0-14.0^D	16.0-18.0	2.00-3.00	—	—	—	—	—	—	—
TP316L	S31603	0.035^E	2.00	0.040	0.030	0.75 max	10.0-15.0	16.0-18.0	2.00-3.00	—	—	—	—	—	—	—
TP316N	S31651	0.08	2.00	0.040	0.030	0.75 max	11.0-14.0^D	16.0-18.0	2.00-3.00	—	—	—	0.10-0.16	—	—	—
TP316LN	S31653	0.035	2.00	0.040	0.030	0.75 max	11.0-14.0^D	16.0-18.0	2.00-3.00	—	—	—	0.10-0.16	—	—	—
TP317	S31700	0.08	2.00	0.040	0.030	0.75 max	11.0-14.0	18.0-20.0	3.00-4.00	—	—	—	—	—	—	—
TP317L	S31703	0.035	2.00	0.040	0.030	0.75 max	11.0-15.0	18.0-20.0	3.00-4.00	—	—	—	—	—	—	—
TP321	S32100	0.08	2.00	0.040	0.030	0.75 max	9.00-13.0	17.0-20.0	—	F	—	—	—	—	—	—
TP321H	S32109	0.04-0.10	2.00	0.040	0.030	0.75 max	9.00-13.0	17.0-20.0	—	G	—	—	—	—	—	—

STAINLESS STEEL
CHEMICAL REQUIREMENTS

Grade	UNS Designation^A	Composition %
Grade	UNS Designation^A	Carbon max^B	Manganese max^B	Phosphorus max	Sulfur max	Silicon	Nickel	Chromium	Molybdenum	Titanium	Columbium plus Tantalum	Tantalum max	Nitrogen^C	Vanadium	Copper	Cenum
TP347	S34700	0.08	2.00	0.040	0.030	0.75 max	9.00-13.0	17.0-20.0	—	—	H	—	—	—	—	—
TP347H	S34709	0.04-0.10	2.00	0.040	0.030	0.75 max	9.00-13.0	17.0-20.0	—	—	I	—	—	—	—	—
TP348	S34800	0.08	2.00	0.040	0.030	0.75 max	9.00-13.0	17.0-20.0	—	—	H	0.10	—	—	—	—
TP348H	S34809	0.04-0.10	2.00	0.040	0.030	0.75 max	9.00-13.0	17.0-20.0	—	—	I	0.10	—	—	—	—
TPXM-10	S21900	0.08	8.00-10.00	0.040	0.030	1.00 max	5.50-7.50	19.0-21.5	—	—	—	—	0.15-0.40	—	—	—
TPXM-11	S21903	0.04	8.00-10.00	0.040	0.030	1.00 max	5.50-7.50	19.0-21.5	—	—	—	—	0.15-0.40	—	—	—
TPXM-15	S38100	0.08	2.00	0.030	0.030	1.50-2.50	17.5-18.5	17.0-19.0	—	—	—	—	—	—	—	—
TPXM-19	S20910	0.060	4.00-6.00	0.040	0.030	1.00 max	11.5-13.5	20.5-23.5	1.50-3.00	—	0.10-0.30	—	0.20-0.40	0.10-0.30	—	—
TPXM-29	S24000	0.080	11.5-14.5	0.060	0.030	1.00 max	2.25-3.75	17.0-19.0	—	—	—	—	0.20-0.40	—	—	—
—	S31254	0.020	1.00	0.030	0.010	0.80 max	17.5-18.5	19.5-20.5	6.00-6.50	—	—	—	0.18-0.22	—	0.50-1.00	—
—	S30815	0.05-0.10	0.80	0.040	0.030	1.40-2.00	10.0-12.0	20.0-22.0	—	—	—	—	0.14-0.20	—	—	0.03-0.08
—	S01815	0.018	2.00	0.02	0.02	3.7-4.3	14.0-15.5	17.0-18.5	0.20 max	—	—	—	—	—	0.50 max	—
—	S31725	0.03	2.00	0.040J	0.030	0.75	13.5-17.5	18.0-20.0	4.0-5.0	—	—	—	0.10 max	—	0.75 max	—
—	S31726	0.03	2.00	0.040J	0.030	0.75	13.5-17.5	17.0-20.0	4.0-5.0	—	—	—	0.10-0.20	—	0.75 max	—

^A New designation established in accordance with ASTM E-527 and SAE J1086. Practice for Numbering Metals and Alloys (UNS).

^B Maximum, unless otherwise indicated.

^C The method of analysis for nitrogen shall be a matter of agreement between the purchaser and manufacturer.

^D For welded TP316, TP316N, TP316LN, and TP316H pipe, the nickel range shall be 10.0-14.0 percent.

^E For small diameter or thin walls or both, where many drawing passes are required, a carbon maximum of 0.040 percent is necessary in grades TP304L and TP316L. Small outside diameter tubes are defined as those less than 0.500 inch (12.7 mm) in outside diameter and light wall tubes as those less than 0.049 inch (1.20 mm) in average wall thickness (0.044 inch

[1.10 mm] in minimum wall thickness).

^F The titanium content shall be not less than five times the carbon content and not more than 0.70 percent.

^G The titanium content shall be not less than four times the carbon content and not more than 0.60 percent.

^H The columbium plus tantalum content shall be not less than ten times the carbon content and not more than 1.00 percent.

^I The columbium plus tantalum content shall be not less than eight times the carbon content and not more than 1.0 percent.

^J For welded pipe, the phosphorus maximum shall be 0.045 percent.

Chemical Requirements

CHEMICAL REQUIREMENTS

STAINLESS STEELCHEMICAL REQUIREMENTS

STAINLESS STEELCHEMICAL REQUIREMENTS

STAINLESS STEEL
CHEMICAL REQUIREMENTS

STAINLESS STEEL
CHEMICAL REQUIREMENTS