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ASTM A312 is an American Standard specification which covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service. The most common grades are 304/304L Stainless Steel and 316/316L Stainless Steel .
What is A312 material?
ASTM A312 pipe is the general use stainless steel pipe applied in different industries. It covers diameters from 1/8” to 30” and thickness from SCH 10S to SCH 80S. Common use material grades are TP304/304L, TP316/316L.
Is A312 seamless?
This specification covers seamless, straight-seam welded, and heavily cold worked welded stainless steel pipe intended for high-temperature and general corrosive service.
What is ASTM A312 Tp304?
Our ASTM A312 Tp304 Efw pipes are electric fusion welded and are less vulnerable to localized corrosion. The A312 Tp304 Material has carbon, manganese, phosphorous, sulfur, silicon and titanium. This mixture makes the A312 Tp304 Smls pipes to be used in unique industrial applications.
What is ASTM A 106 Gr B?
ASTM A106 Seamless Pressure Pipe (also known as ASME SA106 pipe) covers seamless carbon steel nominal wall pipe for high-temperature service. Suitable for bending, flanging and similar forming operations.
What does TP mean in stainless steel?
Chloride stress corrosion is a type of intergranular corrosion and occurs in austenitic stainless steel under tensile stress in the presence of oxygen, chloride ions, and high temperature. It is thought to start with chromium carbide deposits along grain boundaries that leave the metal open to corrosion.
What does a312 mean?
Standard Specification for Seamless, Welded, and Heavily Cold Worked Austenitic Stainless Steel Pipes. 1.1 This specification covers seamless, straight-seam welded, and heavily cold worked welded austenitic stainless steel pipe intended for high-temperature and general corrosive service.
What does TP mean in TP304?
A312 TP304 TP = tubular product. A403 WP304 WP = wrought product.
What is ASTM A351?
The ASTM A351 specification covers austenitic steel castings for valves, flanges, fittings, and other pressure-containing parts. The most common grades are ASTM A351 CF3, CF8 (SS304), and CF8M (SS316). The steel shall conform to the chemical and mechanical requirements set by the specification.
What is SA 240 stainless steel?
1.4307 alloy comes in the category of Austenitic Stainless Steel which provides good strength on high temperature as well corrosion resistance to sulphuric acid. 304L Stainless Plate is an ideal and economical steel plate to make chemical storage containers and milk tankers.
What is TP in piping?
TP Piping fittings use solvent cement as a simple, quick and reliable jointing mechanism, while the absence of metal parts guarantees zero corrosion. TP Piping has been producing valves and fittings for almost forty years and is known as one of the most reliable and professional suppliers in the business.
Which stainless steels are austenitic?
The most common austenitic stainless steel and most common of all stainless steel is Type 304, also known as 18/8 or A2. Type 304 is extensively used in such items as, cookware, cutlery, and kitchen equipment. Type 316 is the next most common austenitic stainless steel.
What does TP stand for in TP316L?
General Introduction & Applications. ASTM A312 Grade TP316 and TP316L refer to the stainless steel 316 and 316L respectively. The prefix “TP” denotes “type” of the stainless steel. TP316 or TP316L pipes may be furnished in seamless or longitudinally welded types with butt welding ends or threaded ends.
What is difference between 304 and 304L?
The only difference between them is the carbon content; the 304 stainless steel has a maximum range of carbon of 0.08% whereas the 304L has a maximum range of 0.03%. This range of carbon in the steel affects the corrosion resistance of the tanks. The change from 304 to 304L was made 20 years ago.
What is the ASTM for 304 stainless steel?
Specifications of 304 and 304L ASTM A240 Stainless Steel Plate 304 STAINLESS STEEL PLATE 304L STAINLESS STEEL PLATE UNS S30400 UNS S30403 ASTM A240 ASTM A240 ASTM A666 ASTM A666 AMS 5513 AMS 5511.
Is 304 or 316 stainless steel stronger?
Though the stainless steel 304 alloy has a higher melting point, grade 316 has a better resistance to chemicals and chlorides (like salt) than grade 304 stainless steel. When it comes to applications with chlorinated solutions or exposure to salt, grade 316 stainless steel is considered superior.
How can you tell the difference between 304 and 316 stainless steel?
Aesthetically, there is no difference between the two; in fact, the only way to differentiate between them is to test them chemically. The main difference between 304 and 316 stainless steel is 316 SS has the addition of molybdenum.
What is the best grade of stainless steel?
304 stainless steel is the most common form of stainless steel used around the world due to excellent corrosion resistance and value. 304 can withstand corrosion from most oxidizing acids. That durability makes 304 easy to sanitize, and therefore ideal for kitchen and food applications.
What are the 4 types of stainless steel?
The four general groups of stainless steel are austenitic, ferritic, duplex, and martensitic. Austenitic. As the most frequently used type, austenitic stainless steels possess high chromium and nickel. Ferritic. Duplex. Martensitic.
Can stainless steel rust?
Stainless steel is armed with built-in corrosion resistance but it can and will rust in certain conditions—although not as quickly or severely as conventional steels. Stainless steels corrode when exposed to damaging chemicals, saline, grease, moisture, or heat for prolonged periods of time.
Why is it called 304 stainless steel?
Type 304 is the most versatile and widely used stainless steel. It is still sometimes referred to by its old name 18/8 which is derived from the nominal composition of type 304 being 18% chromium and 8% nickel. Type 304 stainless steel is an austenitic grade that can be severely deep drawn.
What are the characteristics of 304 stainless steel?
Mechanical Properties of Stainless Steel 304 Grade 304 304H Tensile Strength (MPa) 500 – 700 500 – 700 Proof Stress (MPa) 190 185 Min Elongation A50 mm 45 Min % 40 Min % Hardness Brinell 215 Max HB -.
What does the L mean in stainless steel?
316/316L Stainless Steel: The ‘L’ Designation Type 316 stainless steel is manufactured in another grade due to its widespread potential and it is differentiated by using the letter ‘L’ in its designation. The L denotes the low content of carbon in the steel.
