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ASTM A167: Composition, Properties, and Equivalent Grades

The following is the relevant content mentioned in ASTM A167. Ten to thirty percent chromium is common in stainless steel alloys. Carbon fiber composites that include chromium help resist corrosion and heat. Nickel, molybdenum, titanium, aluminum, niobium, copper, nitrogen, sulfur, phosphorus, or selenium can be added to increase corrosion resistance in certain situations, and boost oxidation resistance.

 

Generally, carbon-free base metal is melted in an electric arc furnace or a basic oxygen furnace, refined in another steelmaking vessel to lower the carbon level, and then fabricated into a product. Oxygen and argon gas are mixed together to be pumped into the liquid steel during the argon-oxygen decarburization process.

 

It is possible to remove carbon from the process while removing carbon monoxide without oxidizing it to carbon monoxide if the oxygen/argon ratio is adjusted. Removal of carbon dioxide under controlled conditions is essential, especially if oxidation and loss of chromium are avoided. Raw materials that have a lower cost, such as high-carbon ferrochromium, allow a simpler melting procedure to be used.

 

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A 169 Type 302B chemical composition

Type 302B has physical properties of ASTM A167

Consider the following grades: A167 type 302B

A’s products can be translated as A167 type 302B-equivalent

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This specification describes the use of stainless steel, chromium-nickel steel, and sheet, as well as strip.

 

This is true even though these measurements are stated in inch-pound units.

 

In addition, the grades previously offered under Specification ASTM A167 have been removed from this specification, and grades from Specification A 240/A 240M are now offered and sold in accordance with Specification A 240/A 240M. When they were no longer part of Specification A167, the specifications for chemical and mechanical properties were identical for grades in Specification ASTM A167 and Specification A 240/A 240M.

 

A167 Type 302B is a specific type of A167 Stainless Steel.

 

Type 302B, A167.

 

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ASTM A167 Type 302B chemical composition

Stainless steel made from Type A167 contains these materials:

 

Carbon

 

Carbon with a minimum undetermined weight percentage of carbon and a maximum weight percentage of carbon. Carbon is a chemical element, the symbol for which is C, and has an atomic number of 6.

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Silt

 

A silicon material with a minimum weight percentage of 2.00% and a maximum weight percentage of 3.00% It is a brittle, metallic, blue-gray solid with a bluish-gray luster and is a semiconductor and a metalloid of four valence. This is an unreactive compound.

 

Ferrous manganese

 

With an undetermined minimum weight percentage and a maximum weight percentage of 2.00, manganese can be described as an indeterminate alloy. Manganese is a chemical element with an atomic number of 25 and a symbol of Mn. However, sulfur is frequently found in minerals as part of an iron-sulfur compound. Manganese is a transition metal, which is primarily used in stainless steel alloys.

 

Phosphorus

 

0.045% total phosphorus weight The atomic number of phosphorus is 15, and its chemical symbol is P. The two basic elemental forms of elemental phosphorus, which are known as yellow phosphorus and white phosphorus, are not the only kinds. There is also a complex form of phosphorus known as red phosphorus.

 

Sulfur 

 

0.03 maximum weight percentage of sulfur Sulfur, an element found in small amounts in all natural things, has an atomic number of 16 and is represented by the symbol S. It is readily found, proliferates rapidly, and is nonmetallic.

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Chromium

 

17.0 weight percent and 19.0 weight percent of chromium. Chromium is a chemical element known as “Cr” and has an atomic number of 24. The first six elements are grouped together in Group 6. The color is dark gray with a metallic luster and a clear fracture. Also, chromium is a major additive in stainless steel, and it is also an anti-corrosive. Additionally, it is essential to remember that chromium is extremely valuable because it is a metal that can be polished to a very fine degree and that does not tarnish.

 

Chromium is used in steel for two reasons: the significant increase in corrosion resistance, and the strengthening effect of metal carbides found at grain boundaries. The chromium content is found between 3% and 5% in high-speed tool steels. Chromium is added to iron at a concentration of greater than 11% to produce stainless steel, the most common corrosion-resistant metal alloy. In order to form stainless steel, ferrochromium is added to molten iron while it is still hot.

 

Nickel

 

Nickel alloy containing a minimum percentage of 8% of total chemical weight and a maximum of 10% of total chemical weight. Nickel is a chemical element, which has the atomic number 28 and the symbol Ni. The color is silver-white with a hint of gold. Nickel is a ductile, hard metal that crosses the transition point from being soft to being hard.

 

Nickel is used in varying proportions, which are shown below: 68% in stainless steel; 10% in nonferrous alloys; 9% in electroplating; 7% in alloy steel; 3% in foundries; and 4% in other applications (including batteries).

 

In other words, the nickel used in industrial and consumer products includes many distinct and well-known goods such as stainless steel, alnico magnets, coinage, rechargeable batteries, electric guitar strings, microphone capsules, plumbing fixture plating, and more specialized alloys such as permalloy, elinvar, and invar.

 

A metal with excellent mechanical properties of ASTM A167 Type 302B

 

For this specific type of stainless steel, the proof of strength is equal to or greater than 598. Tensile strength of 937 and impact energy of 34 are among or equivalent to one another. The elongation at fracture of A 167 Type 302B is 22 millimeters. The cross section is reduced by 32 as the fracture heals. The reduction occurs as solution and aging, annealing, ausaging, Q + T, and many other conditions are applied.

 

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Type 302B has physical properties of ASTM A167

Steel possesses a property greater than or equal to 291, with a density greater than or equal to 833. The specific heat of the A167 Type 302B Stainless Steel is 32, however, the temperature of the A167 Type 302B Stainless Steel is 43.

 

The approximate thermal conductivity of steel is 13. The electrical resistance consists of various elements such as solution, aging, annealing, and Q + T. Elasticity is at 332, and the modulus of elasticity.

 

This stainless steel was discovered to have a new temperature: 219 degrees. while the A167 Type 302B creep rupture strength is 455, the A167 Type 302 creep strain is 148.

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Consider the following grades: A167 type 302B

In terms of the specific stainless steel mentioned above, these are the possible grades to which the phrase may be equivalent:

1. CNS 302B

2. 302B

3. A 167 Type 302B

4. A 314 302B

5. A 276 302B

6. A 473 302B

7. A 580 Type 302B

8. A 959 Type 302B

9. SWS 302B

10. A 167 S30215

11. A 276 S30215

 

The grade believed to be most similar to A 276 is stainless steel.

 

The higher the grade of stainless steel, the better. Some experts claim that, in the vast majority of cases, there are five basic classifications of stainless steel: austenitic, ferritic, martensitic, duplex, and precipitation-hardening.

 

Additionally, the majority of stainless steels contain approximately 16-26% chromium and up to 35% nickel. The non heat-treatable, non-magnetic synthetic resin is in use in the molds. 304 stainless steel is an alloy of 18% chromium and 8% nickel, and it has a chromium/nickel ratio of 18/8. This type of application is found in a variety of industries, including aviation, food, and dairy manufacturing.

 

Chromium, which means low carbon, and they’re nickel-free because of their high chromium content (less than 0.2 percent ). The vast majority of the titanium used in our jewelry is not heat treated. We use it as architectural and automotive trim, and very occasionally for surgical implants. The most frequent chromium, carbon, and nickel concentrations are found in martensitic steels; a chromium content of 11.5 to 18 percent is common. Flexible and durable for tools, wrenches, and turbines. Ferritic and austenitic stainless steels are included in this mixture. The composition contains between 21% and 27% chromium, between 1.35% and 8% nickel, and between 0.05% and 3% copper, as well as between 0.05% and 5% molybdenum.

 

Ferritic stainless steels (in the building of storage tanks, chemical processing, and chemical containers) are both stronger and more resistant to corrosion than austenitic stainless steels (in storage tanks, chemical processing, and chemical containers).

 

Aluminum, copper, and niobium are added in concentrations that are less than half a percent of the alloy’s total mass. It has many of the same corrosion resistance properties as stainless steel, but it has chromium concentrations between 15% and 17.5%, nickel concentrations between 3% and 5%, and copper concentrations between 3% and 5%. A lengthy shaft is produced in precipitation-hardening stainless steel.

 

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A’s products can be translated as ASTM A167-type 302B-equivalent

Some of the most popular products produced were really efficient and widely used, with this ASTM 167 steel type include the following: 

1. Tool Die Steels

2. Stainless Steels

3. Square and Flat Steel

4. Coil Sheet

5. Bar and Hollow Bar

6. Forging

7. Superalloy

8. Tube Pipe

9. Non-Magnetic Steel

10. Steels of Blade for Steam Turbine

 

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