What is the difference between cast 316 material and forged 316 material in terms of mechanical prop

One: the corresponding grade 316 stainless steel.

Two: chemical composition.

c：≤ si≤ mn≤ p≤ s≤ ni crmo ti≥5*c%~

Three: the scope of application, the field of application:

316L stainless steel is added with MO, so its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good, and can be used under harsh conditions; Excellent work hardening (non-magnetic). Excellent strength at high temperatures. 316L stainless steel is an austenitic stainless steel and cannot be strengthened by heat treatment.

It has good strength, plasticity, toughness and cold formability, as well as good low-temperature properties. Due to the addition of 2% MO on the basis of Cr18Ni8, the steel is endowed with good resistance to reducing media and pitting resistance. It has suitable corrosion resistance in various organic acids, inorganic acids, alkalis, salts and seawater.

In reducing acidic media, its corrosion resistance is much better than that of 304

Four: Overview. The corrosion resistance of stainless steel is better than that of 304 stainless steel, and it has good corrosion resistance in the production process of pulp and paper.

And 316 stainless steel is also resistant to the erosion of the ocean and the aggressive industrial atmosphere. In intermittent use below 1600 degrees and continuous use below 1700 degrees, 316 stainless steel has good oxidation resistance. In the range of 800-1575 degrees, it is better not to act continuously on 316 stainless steel, but when 316 stainless steel is used continuously outside of this temperature range, the stainless steel has good heat resistance.

316L stainless steel has better resistance to carbide precipitation than 316 stainless steel, and can be used in the above temperature ranges. Annealing is carried out in the temperature range of 1850-2050 degrees, followed by rapid annealing, followed by rapid cooling. It has high temperature resistance, easy processing, and high strength.

316L stainless steel, no post-weld annealing is required.

On the difference between forging and casting: not only 316 material is the same with any metal material. Mechanical properties.

The best are forged, both from tensile strength.

The yield strength, and the molecular arrangement, are much better than casting. The best mechanical properties of the metal are forging, followed by bar processing, and the worst is casting, but because 316 has poor fluidity, it will not be forged until it is absolutely necessary, except for special requirements. The casting is used when the bar can not be processed or the waste is great, usually for 316 most of the requirements for strong corrosion resistance, so the casting is also very widely used.

Hope you understand. If you have any questions, feel free to ask. Everyone will definitely give you a satisfactory answer.

The structure of the cast state is different from the structure of the forging state, and the forged 316 material will have better bending strength and yield strength, and its comprehensive properties are better. Intuitively, the cast state is weak and not impact-resistant; The forging rigidity is good, and the possibility of brittleness after processing is small.

The mechanical properties of forging are much better, such as strength, toughness, etc. If the mechanical properties of the parts are required to be high, it is best to use forgings.

<>316 steel is made of austenitic stainless steel. 316 is the most widely used food-grade stainless steel after 304 stainless steel. 316 stainless steel has a wider range of applications, with high temperature resistance and corrosion resistance, because 316 stainless steel is added with MO elements, so the physical and chemical properties are more stable, and can still be used normally in high temperature environments.

It can withstand temperatures up to 1300 degrees Celsius. In addition to this, the strength of 316 stainless steel is also greatly enhanced. At present, it is mainly used in large-scale equipment exchangers and materials for the outer cavity of coastal buildings.

316 is an American standard austenitic stainless steel, and the executive standard: ASTM A240 240M-2018

316 stainless steel is commonly used in pulp and paper equipment, heat exchangers, dyeing equipment, film processing equipment, pipes, exterior materials for buildings in coastal areas, and bracelets and cases for high-end watches. The production of equipment, chemicals, dyes, papermaking, oxalic acid, fertilizers, etc. Photography, food industry, coastal facilities, ropes, CD rods, bolts, nuts.

316 is a molybdenum-containing stainless steel grade, due to the molybdenum content in the steel, the total performance of this steel grade is better than 310 and 304 stainless steel, under high temperature conditions, when the concentration of sulfuric acid is lower than 15% or higher than 85%, 316 stainless steel has a wide range of uses. 316 stainless steel also has good resistance to chloride attack, so it is commonly used in marine environments.

The maximum carbon content of 316 stainless steel can be used in applications that cannot be used after welding and where maximum corrosion resistance is required.

The chemical composition of 316 is shown in the figure below

It is made of stainless steel.

316 stainless steel is a kind of stainless steel, due to the addition of MO elements, so that its corrosion resistance, and high temperature strength has been greatly improved, high temperature resistance can reach 1200-1300 degrees, can be used under harsh conditions.

2. The main uses are pulp and paper equipment, heat exchangers, dyeing equipment, film processing equipment, pipelines, materials for the exterior of buildings in coastal areas, and in 2013, they were also used in the field of solenoid valves, mainly used for Minbu hand shells and clamps.

Balls, valve bodies, valve seats, nuts, stems, etc. Stainless steel refers to steel that is resistant to corrosion by weak media such as atmosphere, steam bridge and water, while acid-resistant steel.

It refers to steel that is resistant to corrosion by chemically corrosive media such as acids, alkalis, and salts.

316 belongs to the American standard austenitic stainless steel, the implementation standard: ASTM A240 A240M-19

Due to the addition of MO, 316 stainless steel has particularly good corrosion resistance, hail resistance, atmospheric corrosion resistance and high temperature and strong gear, and can be used under harsh conditions; Excellent work hardening (non-magnetic). It has excellent high temperature strength, and is mainly used in seawater equipment, chemicals, dyes, papermaking, oxalic acid, fertilizer and other production equipment; Photography, food industry, coastal facilities, ropes, CD rods, bolts, nuts.

316 Stainless Steel Chemical Composition:

316 Stainless Steel Chemical Composition:

C Si Mn P S 316 Stainless Steel Plate Properties.

Tensile Strength (MPa) 620 min Yield Strength (MPa) 310 min Elongation (%)30 min Area Reduction (%)40 min 316 Density of stainless steel g cm3,

316 Chemical Composition: Following.

Mechanical properties: tensile strength: 588 elastic ultimate stress: 275 elongation: 58 hardness: 170 300 tensile strength: 520

c mn si p s cr ni ti mo n cumpa tensile strength.

Elongation % Section shrinkage.

Hardness. hardness

What is the difference between 304 stainless steel and 316 stainless steel? Friends who do not know about the building metal material can take a look at the following specific introduction, the main difference between the two is that the performance of rust prevention is different, 316 stainless steel contains more elements than 304 stainless steel, of course, the first aspect is also higher. 304 stainless steel and 316 stainless steel are non-magnetic, and the use of magnets can not be absorbed, and it will not heat up in a high-pressure environment, and the safety is still very high.

Introduction to the difference between 304 stainless steel and 316 stainless steel:

First, although there is not much difference between 304 stainless steel and 316 stainless steel in terms of appearance, friends can distinguish the difference between the two from the composition. 316 stainless steel contains MO, so that 316 stainless steel is much better than 304 stainless steel in high temperature resistance, if the building needs to be built in a high temperature environment, most design engineers will choose 316 stainless steel, so as to better play the stability of the product.

Second, there are obvious differences between 304 stainless steel and 316 stainless steel in terms of grades, for example, 304 stainless steel is 0Cr18Ni9, while 316 stainless steel is 0Cr17Ni12Mo2. When purchasing, you can clearly see the difference between the two from the parameters, which is much simpler than distinguishing from the appearance.

Thirdly, the composition of 304 stainless steel and 316 stainless steel is also different, 316 stainless steel reduces the composition of CR and improves the Ni composition, so that its ability to resist corrosion has been enhanced. In particular, it can be used in seawater or chemical environments. 316 stainless steel is also higher in terms of cost, and the kitchen sink will be made of 316 stainless steel when decorating the house, so that the corrosion resistance is stronger.

Through the above reading, friends can understand the difference between 304 stainless steel and 316 stainless steel. It is not easy to see the two when identifying, if the conditions permit, you can use stainless steel potion for identification, mainly to see which of the two has relatively strong corrosion resistance, and friends can choose according to their needs when purchasing.

Difference: 304 stainless steel is a versatile stainless steel material. The high temperature resistance is also relatively good, and the general use temperature limit is less than 650. 304 stainless steel has excellent stainless corrosion resistance and good intergranular corrosion resistance.

1. 316 stainless steel:

Stainless steel, due to the addition of MO, its corrosion resistance, atmospheric corrosion resistance and high temperature strength are particularly good, and can be used under harsh conditions; Excellent work hardening (non-magnetic).

2. 304 stainless steel:

Stainless steel is a common material in stainless steel, with a density of g cm3, which is also called 18 8 stainless steel in the industry. High temperature resistance of 800 degrees, with good processing performance and high toughness, it is widely used in industry, furniture decoration industry and food and medical industry.

2. There are 06Cr19Ni10 and SUS304 in the common labeling methods on the market, of which 06Cr19Ni10 generally represents the national standard production, 304 generally represents the ASTM standard production, and SUS 304 represents the Japanese standard production.

l Stainless steel, what is the difference between them? Today is a long time to see.

The 304-GB grade is 0Cr18Ni9.

304 Physical properties: tensile strength b (mpa) 520, conditional yield strength mpa) 205, elongation δ5 (%40, section shrinkage 60, hardness: 187HB; ≤90hrb;≤200hv。

316—, 316 stainless steel mechanical properties, tensile strength (mpa) 620 min, yield strength (mpa) 310 min, elongation (%) 30 min, area reduction (%) 40 min, density of 316 stainless steel g cm3.

316 has a higher nickel content than 304, and the addition of molybdenum gives it a special structure that is resistant to corrosion.

304 is equivalent to the domestic 0Cr18Ni9, 316 is equivalent to the domestic 0Cr17Ni12Mo2, all belong to the ordinary low-carbon stainless steel, is a typical 18-8 chromium-nickel stainless steel, mainly resistant to the corrosion of less strong oxidizing acids, and also has a certain corrosion resistance to reducing acids (the existence of nickel), poor intergranular corrosion resistance, and intergranular corrosion is easy to occur at temperatures between 400-800. The only difference between the two is that 316 contains MO, and the presence of MO improves the resistance of 316 steel to chloride pitting corrosion. The latter two are different from 304L and 316L, the latter two belong to ultra-low carbon stainless steel, and the low temperature resistance and intergranular corrosion resistance are significantly improved, among which 316L has the best comprehensive performance.

How to improve the hardness of 316 stainless steel (how to improve the hardness of 316 stainless steel powder metallurgy).

Q1: How to improve the hardness of 316 stainless steel powder metallurgy.

It's hard to increase! Generally, the hardness is higher after direct hot rolling, and the hardness decreases after heat treatment! Otherwise, you can heat it directly and then air cool it or cool it slowly, so that the hardness of the field can be improved! Also, surface shot peening may be beneficial!

Q2: How to improve the surface hardness of 316 stainless steel molded parts (machined bolts)?

It is a little difficult to operate, because 316 cannot change the hardness after heat treatment, and the hardness can only be improved by cold work hardening, but the processed bolts can no longer be coldly deformed. There are only several other treatments, such as surface nitriding, surface chrome plating, etc.

Q3: Stainless steel 201 compared with 316! Which is harder and which is easier.

The hardness of 201 is high, and the stainless steel of 200 series is relatively difficult to process. I have been engaged in stainless steel smelting for several years, and I have also been engaged in machining for several years, and you consider it from both cost and processing difficulty. It can be achieved that about 2% pure copper (copper or electrolytic copper can be used) is added in the 201 stainless steel smelting process, and there is absolutely no processing difficulty after such stainless steel is smelted.

So the above content is about how to improve the hardness of 316 stainless steel powder metallurgy some information digging mess shouting, I hope this article can help netizens get some of the content they want to know. How to improve the surface hardness of 316 stainless steel molded parts (machined bolts)? It is carefully collected and summarized, and I hope it can help you.