difference between 630 B-tratare-suprafață-benzi-oțel-inoxidabil 631 bandă de oțel inoxidabil

Diferență între 630 Bandă de oțel inoxidabil și 631 Bandă de oțel inoxidabil

630 benzi de otel inoxidabil si 631 stainless steel strips are made with bobine din otel inoxidabil.

These two alloys are 95% the same in composition. There are some differences in properties.

Nota 630 benzi de oțel inoxidabil have 17% crom și 4% nickel contents and are also known as UNS 17400 și 17-4 PH.

On the other hand, cel nota 631 benzi de oțel inoxidabil have 17% crom și 7% nickel contents and are also known as UNS 17700 and 17-7PH.

The 630 stainless steel strips are martensitic stainless steels that have undergone precipitation hardening to improve their mechanical characteristics.

După tratamentul termic, these strips reach exceptional levels of strength and hardness.

Nota 630 stainless steel strips have heat and corrosion resistance similar to nota 304 benzi de oțel inoxidabil.

The 631 stainless steel strips have outstanding features for strength, high hardness and elasticity, good resistance to corrosion, resistance to high temperatures, and resistance to deformation.

Strips made of 631 stainless steel offer useful property combinations that are exceptionally well-suited for aeronautical applications.

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One of the most well-known and frequently employed precipitation hardening type of high strength stainless steel strips.

With copper addition, impact hardened with martensitic structure is called 17-4PH / 630 / 1.4542. High-strength qualities, such as hardness, are maintained while retaining a high level of corrosion resistance.

While maintaining reasonably excellent characteristics, 630 stainless steel strips can operate in the temperature range of -29 °C to 343 °C.

Apart from that, the materials of this grade have decent ductility and corrosion resistance.

630 stainless steel grade’s availability under solution-treated conditions, at which point they may be easily machined and age-hardened to achieve high strength, is one of its main advantages.

Cold-rolled strips are available in 17-4PH, 630 și 1.4542.

The 630 stainless steel strips are widely used for heavy-duty mechanical parts, bushings, rotor blades, couplings, screws, drive shafts, nuci, and measuring devices in the aerospace, marin, Finisajul suprafeței 2D este, în general, tratat termic și decapat după laminare la rece, energie, offshore, and food industries.

What is 631/17-7PH/1.4568 Stainless Steel Strip?

The 17-7PH/631/1.4568 stainless steel strips are among the age-hardened PH materials with the highest amounts of chromium and nickel at 17% și 7%, respectiv.

În plus, these stainless steel strips have high strength and exceptional corrosion resistance.

Aceste 631 stainless steel alloy strips also have outstanding flat spring qualities at temperatures up to 600°F (316°C).

The edge of a 17-7 PH stainless steel strip can be made as a slit or round variety, depending on the manufacturing method.

The 631/17-7PH stainless steel strips are utilized in machine constructions and parts such as valve parts, containere, izvoare, spring washers, food knives, diaphragms, high and low-temperature parts, schimbătoare de căldură, unique fittings, and installations.

benzi, wires, sheets, and bars made of 631 stainless steel are used in the aerospace, chimic, petrochimic, energie, alimente, and cryogenic industries.

Nota 630 Bandă de oțel inoxidabil vs. Nota 631 Comparație benzi de oțel inoxidabil

The 630 benzi de otel inoxidabil si 631 stainless strips are slightly similar.

in orice caz, there are some differences in composition and properties.

630 Bandă de oțel inoxidabil

Chemical composition

Compoziția chimică a 630 stainless steel strips is given below
Crom 15-17%
Nichel 3-5%
Mangan 1%
Siliciu 1%
Fosfor 0.040%
Sulf 0.03%
Cupru 3-5%
Carbon 0.07%
Niobium +Tantalum 0.15-0.45%

Mechanical properties

Mechanical properties of 630 stainless steel strip up to 100 mm diameter/ thickness.
Rezistență la tracțiune: 1200MPa max
Rezistenta la curgere: 1172MPa
Elongation A50: 10%
Duritate, Rockwell C:


The density of 630 stainless strips is about 7.75 g/ cm³

631 Bandă de oțel inoxidabil

Chemical composition

Now discuss the chemical composition of grade 631 benzi de oțel inoxidabil
Crom: 16-18%
Nichel: 6.5-7.75%
Mangan: 1%
Siliciu: 1%
Fosfor: 0.040%
Sulf: 0.03%
Aluminiu: 0.75-1.5%
Carbon: 0.090%

Mechanical properties

Proprietățile mecanice ale gradului 631 stainless steel strips are given below.
Rezistență la tracțiune: 1275MPa
Rezistenta la curgere: 1030MPa
Elongation A50: 6%
Duritate, Rockwell C


The density of 631 stainless strips is about 7.80 g/ cm³

What are the Grade 630 Stainless Steel Strips and Grade 631 Aplicații pentru benzi de oțel inoxidabil?

The 630 stainless steel strips are used in components for valves, șuruburi, and gears, Dies for molding plastic, Boat propeller shafts and high-strength pump shafts, and Elements of an engine.

În general, in situations where high strength or hardness is required, with some degree of corrosion resistance, the majority of uses are for precipitation-hardening 630 benzi de oțel inoxidabil. These strips are used in the aerospace and other high-tech industries because of their high strength. Some other important applications consist of the following:

Transfer of power High-quality engine components such as gears, supape, stronger shafts, steam turbine blades, and molding dies are also available.

The 631 stainless steel strip has excellent welding performance, putere, and hardness. Washers and springs are the main applications for stainless steel strips of grade 631/17-7. It is employed in those applications when great strength and corrosion resistance are required. Due to its minimal thermal distortion, it is also used in complicated parts.

The aerospace, petrochimic, chimic, and petrochemical sectors, as well as the energy, alimente, and cryogenic industries, all use stainless steel 631strips. Due to its low distortion during heat treatment, it is also used in complicated parts.

Which one between Grade 630 Stainless Steel Strip and Grade 631 Stainless Steel Strip is better?

Ambii 630 și 631 stainless steel strips are widely used in many applications and are very popular among customers.

The grade 631 bandă de oțel inoxidabil este mai bună decât 630 stainless steel due to extra Nickel contents and the addition of aluminum content in its composition.

The additional nickel content can increase the corrosion resistance and strength of 631 benzi de oțel inoxidabil.

The tensile and yield strength of 631 stainless steel strips is more than 630 benzi de oțel inoxidabil.


These two stainless steel strips have their importance in the industry.

The 630 și 631 stainless steel strips have excellent corrosion resistance, duritate, putere, and stability at high temperatures.

Due to excellent properties, these grades of stainless steel strips are in demand these days.

În cazul în care aveți vreo întrebare, simte-te liber sa contactați echipa HZW. Aici HZW vă va ajuta în toate benzi de oțel inoxidabil solutions.

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