ASME SA213 TP304L Stainless Steel Tube ASTM A213 TP304L Stainless Steel Tube

ASME SA213 TP304L Stainless Steel Tube is a variation of the 18% chromium – 8% nickel austenitic alloy, the most familiar and most frequently used alloy in the stainless steel family. This alloy may be considered for a wide variety of applications and exhibits good corrosion resistance, ease of fabrication, excellent formability, and high strength with low weight. Type 304L is a lower carbon variant of Grade 304 – the steel can be welded without the resulting issue of carbon precipitation precipitation of chromium carbide as heat is applied during the welding process which depletes the chromium element of the steel thus reducing its anti-corrosive/oxidation effectiveness, and because of low carbon percentage, can minimizing Intergranular corrosion attack.

As a result, Type 304L Stainless Steel Tube is a sort after material for use in severely corrosive conditions. Weld annealing is only necessary in applications where stress loads are excessive. This steel Grade is found in a variety of commercial sectors, particularly in the chemical industry. 304 & 304L have similar properties and in certain cases are stocked with Dual Certification, where it is concluded that each item has properties and a composition which comply with both steel types. Grade 304H cannot be included in this equation due to the steel’s higher carbon content which is intended for use in elevated temperature applications.

What does the L mean?

L-grades have 0.035% carbon maximum. L-grades are resistant to sensitization in short-term exposures or heat treatments. L-grade often have slightly lower (typically 5,000 psi less) minimum strengths than standard stainless steel.

Benefits of using 304L Stainless Steel Tube

Low carbon content eliminates carbon precipitation in the welding process
Can be used in severe corrosive environments
Weld annealing only required in high stress applications
Very similar to Type 304

Table 1. Chemical Composition for ASME SA 213 ASTM A213 304 304L 304H

Grade	–	C	Mn	Si	P	S	Cr	Mo	Ni	N
304/S30400	min.max.	-0.08	-2.0	-1.00	-0.045	-0.030	18.0-20.0	–	8.0-11.0	–
EN 10216-5 1.4301	min.max.	-0.07	-2.0	-1.00	-0.040	-0.015	17.00-19.5	–	8.0-10.5	-0.11
304L/S30403	min.max.	-0.035	-2.0	-1.00	-0.045	-0.030	18.0-20.0	–	8.0-12.0	–
EN 10216-5 1.4307	min.max.	-0.030	-2.0	-1.00	-0.040	-0.015	17.5-19.5	–	8.0-10.0	-0.11
304H /S30409	min.max.	0.04-0.10	-2.0	-1.00	-0.045	-0.030	18.0-20.0	–	8.0-11.0	–
EN 10216-5 1.4948	min.max.	0.04-0.08	-2.0	-1.00	-0.035	-0.015	17.0-19.0	–	8.0-11.0	-0.11

Typical Mechanical Properties for grade 304L stainless steel are given in table 2.

Table 2. 304L Stainless Steel Tube Mechanical properties

–	Tensile Strength	Yield Strength	Elongation	Hardness	Hardness
Grade	(MPa) min	0.2% Proof (MPa) min	(% in 50mm) min	Rockwell B (HR B) max	Brinell (HB) max
304	515	205	35	90	192
304L	485	170	35	90	192
304H	515	205	35	90	192

ASTM: TP304L, TP304
UNS: S30403, S30400
EN Number: 1.4306, 1.4301
W.Nr.: 1.4306*, 1.4301*
DIN: X 2 CrNi 19 11*, X 5 CrNi 18 10*
AFNOR: Z 2 CN 18.10*
BS: 304S31*, 304S11*
JIS: SUS304L, SUS304LTB, SUS304TP

Product standards

ASTM A213, A269 and A312
JIS G3459
JIS G3463
EN 10216-5
BS 3605, 3606*
DIN 17456, 17458*
NFA 49-117, 49-217

304L Stainless Steel Pipe Density (lb / cu. in.)		0.29
Specific Gravity(kg/dm³)		7.93
Specific Heat (Btu/lb/Deg°F – [32-212 Deg °F])		0.12
Electrical Resistivity (microhm-cm (at 68 Deg °F))		432
Melting Point (Deg°F)		2650
Modulus of Elasticity Tension		28

304L Stainless Steel is used for a wide range of industrial applications. Typical application are: heat exchangers, condensers, pipelines, cooling and heating coils in the chemical, petrochemical, fertilizer, pulp and paper and nuclear power industries, as well as in the production of pharmaceuticals, foods and beverages.

304L Stainless Steel Tube are normally delivered in heat treated condition. If additional heat treatment is needed after further processing the following is recommended.

Stress relieving

850-950 °C (1560-1740 °F), cooling in air.

Solution annealing

1000-1100°C (1830-2010°F), rapid cooling / Quenching in water.

Stainless-Steel-Tubes-LG20-Pilger-Machines

ASME SA213 TP304L Stainless Steel Tube ASTM A213 TP304L Stainless Steel Tube

Heat Treatment Requirements

Grade	UNS Designation	Heat Treat Type	Austenitizing/ Solutioning Temperature, min or range °F [°C]	Cooling Media	ASTM Grain Size No. B
TP304	S30400	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP304L	S30403	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP304H	S30409	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	7
TP309S	S30908	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP309H	S30909	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	7
TP310S	S31008	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP310H	S31009	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	7
TP316	S31600	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP316L	S31603	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP316H	S31609	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	7
TP317	S31700	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP317L	S31703	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP321	S32100	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP321H	S32109	Solution treatment	cold worked:2000[1090] hot rolled: 1925 [1050]H	water or another rapid cool	7
TP347	S34700	Solution treatment	1900 °F [1040 °C]	water or another rapid cool	. . .
TP347H	S34709	Solution treatment	cold worked:2000[1100] hot rolled: 1925 [1050]H	water or another rapid cool	7
TP444	S44400	subcritical anneal	. . .	. . .	. . .

Referenced Documents

1 Stainless Steel and Related Alloys and is the direct responsibility of Subcommittee A01.10 on Stainless and Alloy Steel Tubular Products. Current edition approved April 1, 2009. Published April 2009. Originally approved in 1939. Last previous edition approved in 2009 as A 213/A 213M – 09.

2 For ASME Boiler and Pressure Vessel Code applications see related Speciﬁcation SA-213 in Section II of that Code.

ASTM A262 Practices for Detecting Susceptibility to Intergranu lar Attack in Austenitic Stainless Steel
A 941 Terminology Relating to Steel, Stainless Steel, Re lated Alloys, and Ferroalloys
A 1016/A 1016M Speciﬁcation for General Requirements for Ferritic Alloy Steel, Austenitic Alloy Steel, and Stainless Steel Tubes
ASTM E112 Test Methods for Determining Average Grain Size

Nominal Pipe Size (NPS): 1/8, 1/4, 3/8, 1/2, 3/4, 1, 1 1/4, 1 1/2, 2, 2 1/2 inch
Outside Diameter: 10,3 – 73 mm (0,405 – 2,875 inch)
Wall Thickness: 1,24 – 7,01 (0,049 – 0,276 inch)

Tensile Requirements

Grade	UNS Designation	Tensile Strength, Min ksi [MPa]	Yield strength, min ksi [MPa]	Elongation in 2 in. or 50 mm, min, %A, B	Hardness, Brinell/Vickers Max	Hardness, Rockwell Max
TP304	S30400	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP304L	S30403	70 [485]	25 [170]	35	192HBW/200Hv	90HB
TP304H	S30409	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP304N	S30415	80 [550]	35 [240]	35	192HBW/200Hv	90HB
TP310S	S31008	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP310H	S31009	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP316	S31600	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP316L	S31603	70 [485]	25 [170]	35	192HBW/200Hv	90HB
TP316H	S31609	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP316Ti	S31635	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP317	S31700	75 [515]	30 [205]	34	192HBW/200Hv	90HB
TP317L	S31703	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP321	S32100	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP321H	S32109	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP347	S34700	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP347H	S34709	75 [515]	30 [205]	35	192HBW/200Hv	90HB
TP444	S44400	60 [415]	40 [275]	20	217 HBW/230HV	96HB

Flattening Test

One flattening test shall be made on specimens from each end of one finished tube, not the one used for the flaring test, from each lot.

Flaring Test

One flaring test shall be made on specimens from each end of one finished tube, not the one used for the flattening test, from each lot.

Hydrostatic or Nondestructive Testing

Each pipe shall be subjected to the nondestructive electric test or the hydrostatic test, the type of test to be used shall be at the option of the manufacturer, unless otherwise specified in the purchase order.

Markings

Markings will adhere to prescribed specifications in A999/A999M and shall include the NPS or OD and schedule number or average wall thickness, heat number, and NH (when hydrotesting is not performed) and ET (when eddy-current testing is performed) or UT (when ultrasonic testing is performed). The marking shall also include the manufacturer’s private identifying mark, the marking requirement of section 12.3 on Hydrostatic or Nondestructive Electric Test, if applicable, and whether seamless (SML), welded (WLD), or heavily cold-worked (HCW). For Grades TP304H, TP316H, TP321H & TP347H, the marking shall also include the heat number and heat-treatment lot identification.

Note:

Mill test certificates will be issued according to EN10204.3.
All tubes shall be supplied as per applicable ASTM A213 /A213M Specification.

Notes:

Steel Grades – TP 304, TP 304L, TP 316, TP 316L, TP 321
Technical requirements acc. to ASTM A 450.
Size of pipes in accordance with ANSI/ASME B36.19M.
The quality of pipes is ensured by manufacturing process and non-destructive test.
Hardness of metal not less than 100 HB.
Length tolerance of measured pipes not greater than +10 mm.
Monitoring of continuity of metal by pneumotest with pressure of 6 bar is available.
Intergranular corrosion test in accordance with ASTM A262, Practice E is available.