Austenitic stainless steel

stainless steel 304L S30403 tubes pipes EN 10216-5 1.4307 Stainless Steel Tubing piping

stainless steel 304L S30403 tubes pipes EN 10216-5 1.4307 Stainless Steel Tubing piping

OD:0.4-426mm THK:0.1-25mm
SUFACE:AP(Annealed and pickling) / MP(mechanically polish)/BA(bright annealed)
Product description: stainless steel 304L UNS S30403 tubes pipes EN 10216-5 1.4307 Stainless Steel Tubing piping，304L tp304L pipes, 304L tp304L tubes,304L tp304L piping,304L tp304L tubing,Stainless steel 304L tp304L pipes
INQUIRY

stainless steel 304L UNS S30403 tubes pipes EN 10216-5 1.4307 Stainless Steel Tubing piping

Key words

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Introduce

ASTM A213 A312 A269 A511 A240 UNS S30403 304L, EN 10216-5 1.4307 stainless steel pipe 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 tubing 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 of stainless steel 304L tubes pipes?
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 pipe

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

Table1. Composition ranges for ASME SA213 304 304L 304H and EN 10216-5 1.4301 1.4307 1.4948

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

Table2. Grade specifications for 304/304L/304H grade stainless steel of tinsi

Grade	UNS No			EN		Swedish SS	JIS
Grade	UNS No	BS	En	No	Name	Swedish SS	JIS
304	S30400	304S31	58E	EN 10216 - 5 1.4301	X5CrNi18-10	2332	SUS 304
304L	S30403	304S11	-	EN 10216 - 5 1.4307	X2CrNi19-11	2352	SUS 304L
304H	S30409	304S51	-	EN 10216 - 5 1.4948	X6CrNi18-11	-	-
These comparisons are approximate only. The list is intended as a comparison of functionally similar materials not as a schedule of contractual equivalents. If exact equivalents are needed original specifications must be consulted.

stainless steel 304L UNS S30403 tubes pipes EN 10216-5 1.4307 Stainless Steel Tubing piping

304L Stainless Steel Tubing General Information

304L Stainless Steel Principal Design Features

A low carbon version of type 304 stainless. 304L is used almost interchangeably with 304 but is preferred for welding operations. It offers a good combination of strength, corrosion resistance and fabricability.

304L Stainless Steel Applications

Almost every conceivable industry uses some of this material in some way. Everything from stovetops to ball point pen barrels to flatware to fasteners has been fabricated from this alloy.

304L Stainless Steel Pipe Machinability

Slow speeds and heavy feeds will minimize this alloys tendency to work harden. Due to long stringy chips, the use of chip breakers is advisable. Many companies now offer premium machinability grades, such as CarTech with their Project 70 and 7000 series.

304L Stainless Steel Tubing Welding

All fusion and resistance processes have been successfully employed in welding 304. AWS E/ER308 or 312 filler metal is recommended. Its low carbon, means that the is less carbide precipitation at the weld boundaries resulting in stronger welds.

304L Stainless Steel Pipe Hot Working

Forging, heading and other hot working should follow uniform heating to 2100-2300 F (1149-1260 C). Rapid cooling is necessary to attain maximum corrosion resistance in finished parts.

304L Stainless Steel Tubing Cold Working

Readily fabricated by most cold working methods, 304L may require intermediate annealing to avoid cracking or tearing from radical deformation. Full annealing should follow any operation to reduce internal stress and optimize corrosion resistance.

Inspection of TINSI-STEEL TP304L

PMI test

Dimension & Visual Examination

Surface Roughness Test

Tensile Test

Flaring Test

Flattening Test

Metallographic Inspection

Hardness Tests(general choose one among)

Brinell Hardness Test.

Vickers Diamond Hardness Test.

Rockwell Hardness Test.

Non-destructive Tests (general choose one among)

Hydrostatic Testing.

Ultrasonic Testing

Eddy-Current Testing

stainless steel 304L UNS S30403 tubes pipes EN 10216-5 1.4307 Stainless Steel Tubing piping

304L Stainless Steel Pipe Annealing
1850-2050 F (1010-1121 C) followed by rapid cooling.
304L Stainless Steel Pipe Hardening
This alloy does not respond to heat treatment. Cold work will cause an increase in both hardness and strength.
304L Stainless Steel Tubing Physical Properties
304L Stainless Steel Pipe Density (lb / cu. in.)	0.29
Specific Gravity(kg/m3)	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 Pipe Mechanical Properties Test By tinsi steel with Pipe size OD48.3mm, WT3.38mm According to ASME SA213
Products	Stainless Steel Tubing
Condition	Test Specimen Annealed
Hardness Rockwell HRB	78
Tensile Strength Mpa	573/582
Yield Strength Mpa	255/261
Elongation %	52-53

Size of tinsi-steel tubes pipes

Size:1/4″ × 0.035″

ASTM A213 A269 ASME SA 213 304/304L 304L Stainless Steel Tubing Pipe Tubes

Size:3/8″ × 0.035″