What is the standard for mechanical property data for 1Cr17Ni2? What is the heat treatment state?

1Cr17Ni2 is the old national standard martensitic stainless steel, corresponding to the new grade: 14Cr17Ni2, the implementation standard: GB T 20878-2007

1Cr17Ni2 stainless steel and heat-resistant steel grades and chemical compositions:

1Cr17Ni2 mechanical properties: tensile strength b (MPa): quenched and tempered 1080

Elongation δ5 ( Quenching tempering 10

Impact energy AKV (J): Quenched and tempered 39

Hardness: Annealed 285HB

Standard: GB T 1220-2007 stainless steel rod.

Features and scope of application.

1Cr17Ni2 series is a steel grade with good strength and toughness in martensitic stainless steel. It has good corrosion resistance to oxidizing acids, most organic acids, and aqueous solutions of organic salts. It is generally suitable for the production of nitric acid and acetic acid and the shaft, piston rod, pump and other parts that require both strength and toughness and corrosion resistance in light industry, textile and other industries.

1Cr17Ni2 steel is a low-carbon chromium-nickel type corrosion-resistant steel with high strength and hardness. It has good corrosion resistance to oxidizing acids (nitric acid at a certain temperature and concentration, most organic acids) and aqueous solutions of organic acids. Sub-temperature quenching can effectively inhibit the high-temperature tempering brittleness of the steel.

The brittle transition temperature of the steel can be reduced, the toughness can be improved, the fracture morphology can be changed from quasi-cleavage type to dimple type, and the enrichment degree of alloying elements in the matrix and δ-ferrite can be increased, which can improve the toughness of the steel while maintaining a high strength level. However, the welding performance of the steel is not good, and it is easy to produce cracks, so it is not suitable for welding when manufacturing tools.

When the forging heating temperature is high, although the -phase of the steel increases, the plasticity is good, which is related to the strong recrystallization of some microstructures. The steel has the highest elongation at 1100°C. In order to improve the plasticity and surface quality of steel, the temperature of forging and rolling should be higher. At the same time, in order to obtain a uniform organization, a large forging ratio should be adopted.

Carbon C: Silicon Si:

Manganese mn:

Sulfur s:

Phosphorus p:

Chromium Cr: Nickel Ni:

1cr17ni2

Mechanical properties: tensile strength b (mpa): quenched tempered 1080 elongation δ5 ( quenched tempered 10

Impact energy AKV (J): Quenched and tempered 39

Hardness: Annealed 285HB

Physical properties: density: 7750 kg m3

Specific heat capacity c: 4600 J(kg*k).

Modulus of elasticity e: 206000MPa at 20

Linear expansion coefficient: 20 100; 20 200 hours;; 20 400, thermal conductivity: 20, 21W (m*k); 22W at 100°C(m*K); 23W at 300°C(m*K); 25W (m*K) at 500°C

The processing performance is significantly improved compared with 14Cr17Ni2, and it can be used instead of 1Cr17Ni2.

1. 1Cr17Ni2 corresponding grades: 1. National standard GB-T standard: digital grade:

S43120, new grade: 17Cr16Ni2, old grade: 1Cr17Ni2,2, American standard:

ASTMA Standard: S43100, SAE Standard: A, UNS Standard:

431,3, Japanese standard JIS standard: SUS431,4, German standard DIN standard: , 5, European standard EN standard:

x17crni16-2。

2. 1Cr17Ni2 chemical composition: carbon C:, silicon Si:, manganese Mn: , phosphorus P: , sulfur S: , chromium Cr:, nickel:.

3. Physical properties of 1Cr17Ni2: Density density (20).

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

100 , thermal conductivity w (

Linear expansion coefficient. 10-6/k)

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

11, resistivity (20).

.mm2 m), longitudinal modulus of elasticity.

20) GPA: 212, Magnetic: Yes.

4. Mechanical properties of 1Cr17Ni2: Delivery status: bar solution treatment, plate solution pickling, tensile strength (rm mpa):

880 1350, Tensile strength (: 690 1050, elongation a %: 12, section shrinkage (z %):

39。5. 1Cr17Ni2 heat treatment: Hardness HBW: annealed 295, hardness HRB: - Heating temperature: 680 800, Heating method: air cooling or furnace cooling.

1Cr17Ni2 application field: suitable for the production of parts requiring high strength, toughness, plasticity and corrosion resistance, as well as load-bearing parts working in excessive humidity media.

GB T 20878 No.: 106

Uniform numeric code: S43110

New grade: 14Cr17Ni2

Old grade: 1Cr17Ni2

Mass Fraction %|c:

Mass Fraction %|si:

Mass Fraction %|mn:

Mass Fraction %|p:

Mass Fraction %|s:

Mass Fraction %|ni:

Mass Fraction %|cr: 16～18

Mass Fraction %|mo: —

Mass Fraction %|cu: —

Mass Fraction %|n: —

Mass Fraction %|Other elements: —

Mechanical properties and hardness of the specimen after quenching and temperingStipulates non-proportional elongation strength|:

Mechanical properties and hardness of the specimen after quenching and temperingTensile Strength|pm≥/(n/mm^2): 1080

Mechanical properties and hardness of the specimen after quenching and temperingElongation after break|a %: 10 mechanical properties and hardness of the specimen after quenching and temperingSection shrinkage|z①≥/%:

Mechanical properties and hardness of the specimen after quenching and temperingImpact absorption work|aku2③≥/j: 39

Mechanical properties and hardness of the specimen after quenching and temperingAfter quenching and temperinghbw≥:

Mechanical properties and hardness of the specimen after quenching and temperingAfter quenching and temperinghrc≥:

Hardness of steel rod after annealing |hbw≤: 285

Heat treatment system for steel rods|Annealing : 600 700 high temperature tempering, air cooling.

Heat treatment system of specimens|Quenching : 950 1050 oil cooled.

Heat treatment system of specimens|Tempering : 275 350 quick cooling.

680-700 High Temperature Tempering Air Cooled 950-1050 Oil Cooled 275-350 Air Cooled GB T1220-1992

Is it 2:17 type material?

It's about 1100 degrees for 72 hours.

1Cr17Ni2 is jointly strengthened by martensitic phase and chromium carbide precipitated phase, excessive chromium carbide precipitation will lead to embrittlement of the material, and the peak temperature zone of chromium carbide precipitated phase should be avoided during heat treatment. 1Cr17Ni2 in.

Under the heat treatment process of 980 degrees 1h (oil quenching) + 340 degrees 2h (air cooling), the best strength and toughness matching can be obtained.

Heat treatment specifications: 1) annealing, 680 700 high temperature tempering and air cooling;2) Quenching, 950 1050 oil cooling;3) Temper 275 350 air cooled.

Hardness: Annealed 285HB

Heat treatment specifications and metallographic structure.

Heat treatment specifications: 1) annealing, 680 700 high temperature tempering and air cooling;2) Quenching, 950 1050 oil cooling;3) Temper 275 350 air cooled.

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

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

1CR17Ni2 implementation standard: GB T 20878-2007, the heat treatment state is (quenching and tempering to achieve).

The mechanical properties are as follows:

Mechanical properties: tensile strength b (mpa): quenched tempered 1080 elongation δ5 ( quenched tempered 10

Impact energy AKV (J): Quenched and tempered 39

Hardness: Annealed 285HB

1Cr17Ni2 stainless steel and heat-resistant steel grades and chemical compositions:

1cr17ni2

Mechanical properties: tensile strength.

b (mpa): quenching.

Temper 1080

Elongation δ5 ( Quenching tempering 10

Impact energy AKV (J): Quenched and tempered 39

Hardness: Annealed 285HB

Physical properties: density: 7750 kg m3

Specific heat capacity c: 4600 J(kg*k).

Elastic modulus. E: 20 hours, 206000MPa linear expansion coefficient: 20 100 hours; 20 200 hours;; 20 400, thermal conductivity. :21W (m*k) at 20; 22W at 100°C(m*K); 23W at 300°C(m*K); 25W (m*K) at 500°C

GB T 20878 No.: 106

Uniform numeric code: S43110

New grade: 14Cr17Ni2

Old grade: 1Cr17Ni2

Mass Fraction %|c:

Mass Fraction %|si:

Mass Fraction %|mn:

Mass Fraction %|p:

Mass Fraction %|s:

Mass Fraction %|ni:

Mass Fraction %|cr: 16～18

Mass Fraction %|mo: —

Mass Fraction %|cu: —

Mass Fraction %|n: —

Mass Fraction %|Other elements: —

Mechanical properties and hardness of the specimen after quenching and temperingStipulates non-proportional elongation strength|:

Mechanical properties and hardness of the specimen after quenching and temperingTensile Strength|pm≥/(n/mm^2): 1080

Mechanical properties and hardness of the specimen after quenching and temperingElongation after break|a %: 10 mechanical properties and hardness of the specimen after quenching and temperingSection shrinkage|z①≥/%:

Mechanical properties and hardness of the specimen after quenching and temperingImpact absorption work|aku2③≥/j: 39

Mechanical properties and hardness of the specimen after quenching and temperingAfter quenching and temperinghbw≥:

Mechanical properties and hardness of the specimen after quenching and temperingAfter quenching and temperinghrc≥:

Hardness of steel rod after annealing |hbw≤: 285

Heat treatment system for steel rods|Annealing : 600 700 high temperature tempering, air cooling.

Heat treatment system of specimens|Quenching : 950 1050 oil cooled.

Heat treatment system of specimens|Tempering : 275 350 quick cooling.

1Cr17Ni2 stainless steel.

Mechanical properties: tensile strength b (mpa): quenched tempered 1080 elongation δ5 ( quenched tempered 10

Impact energy AKV (J): Quenched and tempered 39

Hardness: Annealed 285HB

Physical properties: density: 7750 kg m3

Specific heat capacity c: 4600 J(kg*k).

Modulus of elasticity e: 206000MPa at 20

1Cr17Ni2 mechanical properties: Delivery condition: solution treatment of bars, solution pickling of plates, tensile strength (rm mpa):

1080, Tensile strength (:a, elongation a %:10, section shrinkage (z %):

39。1Cr17Ni2 heat treatment: Hardness HBW: annealed 285, Hardness HRB: - Heating temperature: 680 700, Heating method: air cooling or tempering.