What is SUS632？

SUS632 is an austenitic precipitation hardened stainless steel, which is an austenitic unstable stainless steel. At room temperature, the solid solubility of this steel is austenitic structure. After cold treatment, cold treatment or heating to about 750 ℃ for adjustment, it can be transferred to austenite at MARTYL to select the second stage to strengthen the steel.

What is the chemical composition of SUS632?

Carbon C (%): ≤ 0.09;

Silicon Si (%): ≤ 1.00;

Manganese Mn (%): ≤ 1.00;

Sulfur S (%): ≤ 0.03;

Phosphorus P (%): ≤ 0.035;

Chromium Cr (%): 14.00~16.00;

Nickel Ni (%): 6.50~7.75;

Mo (%): 2.00~3.00;

What are the mechanical properties of SUS632?

tensile strength σ B (MPa): 565 ℃ aging: ≥ 1210; 510 ℃ aging: ≥ 1323;

Conditional yield strength σ 0.2 (MPa): 565 ℃ aging: ≥ 1097.6; 510 ℃ aging: ≥ 1210;

elongation δ 5 (%): 565 ℃ aging: ≥ 17; 510 ℃ aging: ≥ 6;

Reduction of area ψ  (%): 565 ℃ aging: ≥ 25; 510 ℃ aging: ≥ 20;

Hardness HB: A status: ≤ 269; 565 ℃ aging: ≥ 375; 510 ℃ aging: ≥ 388;

Mo (%): 2.00~3.00;

What are the physical properties of SUS632?

density ρ (kg · m-3): A status: 7804, TH1050:7685, RH950: 7680, CH900: 7670;

Specific resistance (n Ω · m): A state: 0.800, TH1050: 0.820, RH950: 0.830, CH900: 0.840;

Thermal conductivity λ: 17W/(m · K) at 150 ℃, 18W/(m · K) at 260 ℃ and 21W/(m · K) at 480 ℃;

Elastic modulus E (room temperature): 199GPa;

Linear expansion coefficient α (TH1050 state): 10.08K-1 at 20~100 ℃, 11.34K-1 at 20~316 ℃;

Melting point: 1415~1450 ℃;

What are the process properties of SUS632?

Process performance includes cold and hot working performance, heat treatment performance and welding performance.

Cold and hot working performance

SUS632 stainless steel has austenitic structure in the solid solution state, and can withstand cold work, but it has a high tendency of cold work hardening. Therefore, cold rolling, cold stamping and other processes are mostly processed with less passes, large reduction and multiple intermediate solution treatment. Its thermal processing is not difficult, and the suitable thermal processing temperature is 950-1150 ℃.

Heat treatment performance

The heat treatment of SUS632 stainless steel is relatively complex and requires very strict requirements. Only by controlling the specified temperature, time and cooling rate can the ideal performance be obtained.

Weldability

The welding of SUS632 stainless steel is the same as that of ordinary stainless steel. Electric arc welding, resistance welding and gas shielded welding can be used, of which gas shielded welding is the best. Welding is generally carried out under the condition of material solution treatment. Preheating is not required before welding, and the whole process of heat treatment is better after welding. When the weld requires high strength, it is mostly selected δ- 0Cr17Ni7A1 steel welding wire with low ferrite content; Austenitic stainless steel welding wire can be used when the weld strength requirement is not high and the corrosion resistance requirement is high.

What are the uses of SUS632 Stainless steel?

SUS632 stainless steel is a versatile material that can be used in a variety of applications. Some of the most common uses for SUS632 stainless steel include:

-Automotive parts and components

-Cookware

-Food processing equipment

-Architectural trim and molding

-Chemical processing equipment

What are the different grades of SUS632 Stainless Steel?

There are three grades of SUS632 stainless steel, each with different properties and applications. The most common grade is SUS632 Annealed, which is a soft, ductile, and easily machinable austenitic stainless steel. The other grades are SUS632 Tempered, which is a harder, more durable martensitic stainless steel; and SUS632 Full Hard, which is the hardest, most brittle martensitic stainless steel.

What are the properties of SUS632 stainless steel?

SUS632 stainless steel is a austenitic chromium-nickel steel with improved machinability due to the addition of sulfur. It is the most widely used of all the stainless steels and has been employed in a wide variety of end uses, including food processing equipment, architectural trim, and automotive parts. The high sulfur content also gives it enhanced corrosion resistance properties.

What are the benefits of SUS632 stainless steel?

SUS632 stainless steel is an austenitic chromium-nickel steel with improved machinability due to the addition of sulfur. It is the most free-machining stainless steel available, but its corrosion resistance and physical properties are slightly lower than those of 304 stainless steel.

The benefits of SUS632 stainless steel include its ease of machining, overall corrosion resistance, good strength and durability. As a result, it is often used in aircraft parts, valves, gears and fasteners.

How to Use SUS632 Stainless Steel?

SUS632 stainless steel is a free-machining grade of 304 that has sulfur added to increase its machinability. It is widely used in food processing, chemical equipment, and architectural applications. Because of its high degree of machinability, SUS632 is often used in place of more expensive grades of stainless steel, such as 304 or 316.

To fabricate SUS632 stainless steel, you will need to use tools designed for working with austenitic steels. These include tungsten-carbide tipped drill bits and end mills. When cutting or drilling this material, it is important to use copious amounts of coolant to prevent heat buildup. Austenitic steels like SUS632 are also susceptible to work hardening, so it is important to take light cuts when machining this material.