ASTM A283 4130 42CrMo 15CrMo St37 C45 A106 Alloy/Carbon Steel Tube Pipe

We now have our individual sales group, layout team, technical team, QC crew and package group. Now we have strict high-quality control procedures for each procedure. Also, all of our workers are experienced in printing discipline for ASTM A283 4130 42CrMo 15CrMo St37 C45 A106 Alloy/Carbon Steel Tube Pipe, “Quality”, “honesty” and “service” is our principle. Our loyalty and commitments remain respectfully at your support. Call Us Today For even further info, get hold of us now.
We now have our individual sales group, layout team, technical team, QC crew and package group. Now we have strict high-quality control procedures for each procedure. Also, all of our workers are experienced in printing discipline for China 42CrMo Alloy Steel Pipe, Our solutions have mainly exported to south-east Asia Euro-America, and sales to all of our country. And depending on excellent quality, reasonable price, best service, we have got good feedback from customers overseas. You are welcomed to join us for more possibilities and benefits. We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual benefits.

It has no obvious temper brittleness, small deformation during quenching, high fatigue limit and multiple impact resistance after quenching and tempering treatment. 42CrMo alloy seamless pipe has good impact toughness at low temperature and high creep strength and endurance strength at high temperature. Surface quenching after quenching and tempering is usually used as the heat treatment scheme for 42CrMo alloy seamless pipes.

Alloy special steel:41Cr4,25CrMo4,30CrMo4,34CrMo4,42CrMo4

OD: 20-660mm WT: 2.3-100mm L: 5.8M, 6M, 11.8M, 12M or any other specified length.

Application: Machining, General engineering, crane arm, Bushes, Cylinders Various, Conveyor Rolls, Hollow Shafts, Hollow Parts and components, Nuts, Rings, etc

Application of 42CrMo alloy seamless pipe: the special steel used for bridges is “42CrMo”, the special steel for automobile girders is “42CrMo”, and the special steel for pressure vessels is “42CrMo”. This kind of steel improves the mechanical properties of steel by adjusting the carbon (c) content. Therefore, according to the carbon content, this kind of steel can be divided into: low carbon steel — the carbon content is generally less than 0.25%, such as 10 and 20 steel; Medium carbon steel — the carbon content is generally between 0.25 and 0.60%, such as 35 and 45 steel; High carbon steel — the carbon content is generally greater than 0.60%. This type of steel is generally not used to make steel pipes.

Typical Application
Suitable for making large and medium-sized plastic molds requiring certain strength and toughness.

Tolerances of Lengths:
When Length equals 6000mm, Tolerances 0/+10
When 6 000 < L =12 000, Tolerances 0/+15
When > 12 000,Tolerances 0/+ by agreement
Process specification and physical properties of 42CrMo steel pipe
42CrMo steel pipe, carbon content: 0.38 ～ 0.45%, silicon: 0.17 ～ 0.37%, manganese: 0.50 ～ 0.80%.

42CrMo steel pipe belongs to ultra-high strength steel, with high strength and toughness, good hardenability, no obvious tempering brittleness, high fatigue limit and multiple impact resistance after quenching and tempering treatment, and good low-temperature impact toughness.

The steel is suitable for manufacturing large and medium-sized plastic molds requiring certain strength and toughness. Its corresponding international standard organization brand: 42CrMo4 corresponds to Japanese brand: scm440 corresponds to German brand: 42CrMo4 approximately corresponds to American brand: 4140 characteristics and scope of application: high strength, hardenability, good toughness, small deformation during quenching, high creep strength and endurance strength at high temperature. It is used to manufacture forgings with higher strength and larger quenching and tempering cross-section than 35CrMo steel, such as large gear for locomotive traction, transmission gear of supercharger, rear axle, connecting rod and spring clamp with great load, drill pipe joint and fishing tool for oil deep well below 2000m, and mold for bending machine.

Sulfur s: allowable residual content ≤ 0.035%

Phosphorus P: allowable residual content ≤ 0.035%

Chromium (CR): 0.90 ～ 1.20%

Nickel Ni: allowable residual content ≤ 0.030%

Copper Cu: allowable residual content ≤ 0.030%

Molybdenum (MO): 0.15 ～ 0.25%

Allowable stress of 42CrMo

42CrMo allowable stress 186 ～ 310 / MPa, yield point 930 σ S / MPa, 42CrMo has high strength, hardenability, good toughness, small deformation during quenching, and high creep strength and endurance strength at high temperature. 42CrMo steel pipe is used to manufacture forgings with higher strength and larger quenched and tempered section than 35CrMo steel.

1) Critical point temperature (approximate): AC1 = 730 ° C, AC3 = 800 ° C, Ms = 310 ° C.

2) Linear expansion coefficient: temperature 20 ~ 100 ° C / 20 ~ 200 ° C / 20 ~ 300 ° C / 20 ~ 400 ° C / 20 ~ 500 ° C / 20 ~ 600 ° C, linear expansion coefficient: 11.1 × 10K/12.1 × 10K/12.9 × 10K/13.5 × 10K/13.9 × 10K14.1 × 10K。

3) Elastic modulus: temperature 20 ° C / 300 ° C / 400 ° C / 500 ° C / 600 ° C, elastic modulus 210000mpa / 185000mpa / 175000mpa / 165000mpa / 15500mpa

Hot working specification
The heating temperature is 1150 ~ 1200 ° C, the starting temperature is 1130 ~ 1180 ° C, and the ending temperature is > 850 ° C, φ> 50mm, slow cooling.

Normalizing specification
The normalizing temperature is 850 ~ 900 ° C, and the furnace is cooled by air.

High temperature tempering specification
The tempering temperature is 680 ~ 700 ° C, and the furnace is cooled by air.

Quenching and tempering specifications
Preheating temperature 680 ~ 700 ° C, quenching temperature 840 ~ 880 ° C, oil cooling, tempering temperature 580 ° C, water cooling or oil cooling, hardness ≤ 217hbw.

Specification for subcritical strengthening and toughening
Quenching temperature 900 ° C, tempering temperature 560 ° C, hardness (37 ± 1) HRC

Specification for induction quenching and tempering
Quenching temperature 900 ° C, tempering temperature 150 ~ 180 ° C, hardness 54 ~ 60HRC.

Hot working specification
The heating temperature is 1150 ~ 1200 ° C, the starting temperature is 1130 ~ 1180 ° C, and the ending temperature is > 850 ° C, φ> 50mm, slow cooling.

Normalizing specification
The normalizing temperature is 850 ~ 900 ° C, and the furnace is cooled by air.

High temperature tempering specification
The tempering temperature is 680 ~ 700 ° C, and the furnace is cooled by air.

Quenching and tempering specifications
Preheating temperature 680 ~ 700 ° C, quenching temperature 840 ~ 880 ° C, oil cooling, tempering temperature 580 ° C, water cooling or oil cooling, hardness ≤ 217hbw.

Specification for subcritical strengthening and toughening
Quenching temperature 900 ° C, tempering temperature 560 ° C, hardness (37 ± 1) HRC

Specification for induction quenching and tempering
Quenching temperature 900 ° C, tempering temperature 150 ~ 180 ° C, hardness 54 ~ 60HRC.

We now have our individual sales group, layout team, technical team, QC crew and package group. Now we have strict high-quality control procedures for each procedure. Also, all of our workers are experienced in printing discipline for OEM China ASTM A283 4130 42CrMo 15CrMo St37 C45 A106 Alloy/Carbon Steel Tube Pipe, “Quality”, “honesty” and “service” is our principle. Our loyalty and commitments remain respectfully at your support. Call Us Today For even further info, get hold of us now.
OEM China China Alloy/Carbon Steel Pipe and Square Steel Pipe, Our solutions have mainly exported to south-east Asia Euro-America, and sales to all of our country. And depending on excellent quality, reasonable price, best service, we have got good feedback from customers overseas. You are welcomed to join us for more possibilities and benefits. We welcome customers, business associations and friends from all parts of the world to contact us and seek cooperation for mutual benefits.