What is SUS631? What are the main uses of SUS631 stainless steel?

SUS631 precipitation-hardening stainless steel

Corresponding grade: SUS631 S17700 0CR17Ni7AL 17-7PH

It is a kind of diffuse hardened stainless steel, high strength and high hardness, fatigue resistance, good corrosion resistance and formability, and little deformation in case of high temperature, this steel has good performance, especially suitable for aerospace fields, this special alloy is also suitable for other fields with high strength and corrosion resistance. At high temperatures up to 316, the spring performance is still good. SUS631 is used in the aerospace, chemical, petrochemical, paper and metal processing industries.

SUS631 Features and Scope of Application:

Precipitation-hardened steel grades with aluminium are used as springs, thermocoils and gauge components.

SUS631 mechanical properties:

Tensile Strength b (MPa): Solid Solution, 1030; 565 Statute of Limitations, 1140; 510 Statute of Limitations, 1230

Conditional Yield Strength (MPA): Solid Solution, 380; 565 timeliness, 960; 510 Aging, 1030

Elongation δ5 ( Solid solution, 20; 565 Statute of Limitations, 5; 510 Statute of Limitations, 4

Section shrinkage 565 aging, 25; 510 Statute of Limitations, 10

Hardness: solid solution, 229HB; 565 AGING, 363HB; 510 aging, 388HB

SUS631 Specification for Heat Treatment and Metallographic Structure:

Heat treatment specifications: 1) solid solution, 1000 1100 fast cooling; 2) 565 aging, after solution treatment, 760 15 keep for 90min, cool to below 15 within 1h, keep for 30min, reheat to 565 10 keep for 90min, air cooling; 3) 510 aging, after solution treatment, 955 10 keep for 10min, air cooling to room temperature within 24h to cool to -73 6, keep 8h, then heat to 510 10 keep 60min, air cooling.

Metallographic structure: The structure is characterized by precipitation hardening.

Delivery status: generally delivered in a heat treatment state, and the type of heat treatment is indicated in the contract; If not indicated, it will be delivered in a non-heat-treated state.

SUS631 Main Specifications:

SUS631 seamless pipe, SUS631 steel plate, SUS631 round bar, SUS631 forging, SUS631 flange, SUS631 ring, SUS631 welded pipe, SUS631 steel belt, SUS631 straight bar, SUS631 wire and supporting welding consumables, SUS631 round cake, SUS631 flat bar, SUS631 hexagonal bar, SUS631 reducer head, SUS631 elbow, SUS631 tee, SUS631 machining parts, SUS631 bolts, nuts, SUS631 fasteners.

sus631

SUS631 stainless steel is a semi-austenitic precipitation hardening stainless steel with aluminum, the composition is close to 18-8 austenitic stainless steel, and it has good metallurgical and manufacturing processing performance. The heat treatment process of the steel is complex, the performance is easy to fluctuate, the low-temperature toughness is poor, and it becomes brittle below 100 degrees.

1. SUS631 corresponding grades:

1. National standard GB-T standard: digital grade: S51770, new grade:

07Cr17Ni7Al, old grade: 0Cr17Ni7Al, 2, American standard: ASTMA standard:

S17700, SAE standard: 17-7PH, UNS standard: 631, 3, Japanese standard JIS standard:

SUS631,4, German standard DIN standard: ,5, European standard EN standard: X7CRNiAL17-7.

2. SUS631 chemical composition:

Carbon C: , Silicon Si: , Manganese Mn: , Phosphorus P: , Sulfur S: , Chromium Cr:, Nickel Ni:, Other Elements: .

SUS631 Physical Properties:

Density density (20) kg, melting point: 1390 1430, specific heat capacity(0 100) kg (: thermal conductivity w (, thermal conductivity w (, linear expansion coefficient (10-6 k) 0 100, linear expansion coefficient (10-6 k) 0 630 :

Resistivity (20) (mm2 m), longitudinal modulus of elasticity (20) GPA: 200, Magnetic: Yes.

4. SUS631 mechanical properties: Delivery status:

SUS631 solution aging temperature is not the same, the mechanics are not the same, the plate solution pickling, tensile strength (RM MPa): 1140 1230, elongation strength (: 960 1030, elongation a %:

3 5, section shrinkage (z %): 10 25.

SUS631 heat treatment: Hardness HBW: solid solution 229, hardness HRB: about 92, heating temperature: 1000 1100, heating method: fast cooling.

SUS631 application field: It can be used for a variety of structural parts of chemical equipment for long-term work below 350 degrees, various containers, pipes, gauges, spring washers, etc.

<>17-7ph(sus 631) 07cr17ni7al/uns s17700/aisi 631

It is an austenitic-martensitic precipitation hardened stainless steel developed on the basis of 18-8crni, also known as controlled phase change stainless steel. After solution treatment, it is an unstable austenite structure, with good plasticity and processability, after adjustment, the austenite precipitation carbide phenology composition changes, and then after martensite transformation treatment, most of the structure is transformed into low-carbon tempered martensite with good toughness, which is the use state of steel and has good mechanical properties at medium temperature. The corrosion resistance is better than that of general martensitic stainless steel.

Chemical Composition: Carbon (C), Manganese (Mn), Nickel (Ni), Silicon (Si), Phosphorus (P), Sulfur (S), Chromium (Cr), Aluminum (Al).

Super hard, put in the human body, make artificial bone.

oil platforms and so on.

631 is precipitation hardened stainless steel.

SUS631 is a precipitation-hardening stainless steel used in the aerospace, chemical, petrochemical, paper and metal processing industries.

0Cr17Ni7Al)17-7PH 631(07Cr17Ni7Al) precipitation hardening stainless steel.

Stainless steel: SUS631

SUS631 is an austenitic-martensitic precipitation hardened stainless steel developed on the basis of 18-8CrNi, also known as controlled phase change stainless steel. After solution treatment, it is an unstable austenite structure, with good plasticity and processability, after adjustment, the austenite precipitation carbide phenology composition changes, and then after martensite transformation treatment, most of the structure is transformed into low-carbon tempered martensite with good toughness, which is the use state of steel and has good mechanical properties at medium temperature. The corrosion resistance is better than that of general martensitic stainless steel.

Chemical Composition :

Carbon C: Manganese Mn:

Silicon SI:

Chromium Cr: Nickel Ni:

Phosphorus p: sulfur s:

Aluminum al: Note: A single value is the highest unless otherwise noted; When used in some tube making processes, some types of austenitic stainless steels must have a nickel content slightly higher than the values shown in the table; Random; The highest ta-content is; The maximum content is; The maximum content is;

SUS631 heat treatment.

1) Solid solution, 1000 1100 fast cooling;

2) 565 aging, after solution treatment, 760 15 keep for 90min, cool to below 15 within 1h, keep for 30min, reheat to 565 10 keep for 90min, air cooling;

3) 510 aging, after solution treatment, 955 10 keep for 10min, air cooling to room temperature within 24h to cool to -73 6, keep 8h, then heat to 510 10 keep 60min, air cooling.

SUS416 is a Japanese standard martensitic stainless steel, commonly known as stainless iron, with a certain corrosion resistance, is a steel grade with good easy cutting in stainless steel, the implementation standard: JIS G4303-2012

The chemical composition of SUS416 is shown in the figure below

In terms of chemical composition, SUS416 is equivalent to the domestic grade: Y1Cr13

SUS416 is martensitic stainless steel, commonly known as stainless iron, with a certain corrosion resistance, the domestic grade is Y1CR13, which is the best steel grade in stainless steel.

1. SUS416 corresponding grades: 1. National standard GB-T standard: digital grade:

S41617, new grade: Y12CR13, old grade: Y1CR13,2, American standard:

ASTMA standard: S41600, SAE standard: 51416, UNS standard:

416,3, Japanese standard JIS standard: SUS416,4, German standard DIN standard: ,5, European standard EN standard:

x12crs13。

2. SUS416 chemical composition: carbon C: , silicon Si:, manganese Mn: , phosphorus P: , sulfur S: , chromium Cr:, nickel Ni: charge Xu Jia, molybdenum Mo:

Charge allowable addition, nitrogen n:—, copper cu:—, other elements:

3. SUS416 physical properties: density density (20).

kg, melting point: 1482 1532, specific heat capacity(0 100 ) kg(, thermal conductivity w (

100 -:25, thermal conductivity w (

500 -: coefficient of linear expansion.

10-6/k)

0 100 , linear expansion coefficient (10-6 k).

Resistivity (20) (

ω.mm2 m), longitudinal modulus of elasticity.

20 ) GPA:200, Magnetic:

4. SUS416 mechanical properties: Delivery condition: bar solution treatment, plate solution pickling, tensile strength (rm mpa):

540, Elongation strength (:345, elongation a %: 17, section shrinkage (z %):

78。5. SUS416 heat treatment: Hardness HBW: annealed 200, quenched and tempered 159, hardness HRB: 93, heating temperature: 800 900, heating method: air cooling or slow cooling.

SUS416 applications: parts and standard parts for automatic lathe machining, such as bolts, nuts, etc.

SUS416 JSBi free-cutting martensitic stainless steel. Quite domestic Y1Cr13 (Y12Cr13) free-cutting martensitic stainless steel.

Standard: GB T 1220-1992

The name of 416 stainless steel is Y1CR13 in China

Y1CR13 belongs to martensitic stainless steel (Y stands for cutting) with an S component added to the cost.

Characteristics and scope of use:

Stainless steel Y3CR13 is a steel grade that improves the cutting performance of 3CR13.

Chemical Composition: Carbon C:

Silicon SI:

Manganese mn:

Sulfur s:

Phosphorus p:

Chromium Cr: Nickel Ni: Allowed to contain

Molybdenum mo: can be joined

Mechanical Properties: Tensile Strength B (MPa): Quenched and tempered, 735 Conditional Yield Strength MPa): Quenched and tempered, 540 Elongation δ5 (% Quenched and tempered, 12

Section shrinkage quenched and tempered, 40

Impact power AKV (J): quenching and tempering, 24

Hardness: annealed, 235HB; Quenching and tempering, 217HB heat treatment process.

Heat treatment specifications and metallographic structure:

Heat treatment specifications: 1) annealing, 800 900 slow cooling or about 750 fast cooling; 2) Quenching, 920 980 oil cooling; 3) Tempering, 600 750 quick cooling.

Metallographic structure: The tissue is characterized by a martensitic type.

Delivery Status: Generally delivered in heat treated condition.

SUS316 is an austenitic stainless steel.

SUS is the representative letter of the Japanese stainless steel standard, SUS316, which means that the 316 stainless steel meets the Japanese standard.

Meaning of SUS316: SUS is the code name for stainless steel in the Japanese JIS standard. SUS is a Japanese material standard, and 316 stainless steel is a grade of stainless steel produced in accordance with the American ASTM standard.

316 is equivalent to 0Cr17Ni12Mo2 stainless steel in China, and Japan also quoted the name of the United States and called it: SUS316.

630 stainless steel can be increased by heat treatment, 304 and 316 cannot be strengthened by heat treatment.

Nitronic60 is a heat-resistant stainless steel (also classified as a superalloy) with chemical composition C=0,10 Mn=7,00 9,00 Si=3,50 4,50 Cr=16,00 18,00 Ni=8,00 9,00 N0,08 0,18

Mechanical properties Tensile strength = 655 mpa Yield strength = 345 mpa Elongation 2 % = 35 % min

Compare US UNS: UNS S21800

Control Korea: alloy218

There is no comparison with Chinese grades.