Active Member
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[China]
Address: Add.: No.1288, Guangrui Road, Liangxi District, Wuxi City, Jiangsu, China
Contact name:Isabelle
Wuxi Zhongxin Special Steel Co.,Ltd. |
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20Cr is a low hardenability carburized steel. Most of them are used to manufacture carburized parts with high core strength requirements, surface wear, cross-section below 30mm or complex shape and low load.
Mechanical character
| tensile strength MPa | Yield point | Elongation after break% | rate of reduction in area% | Impact energy/J | Brinell hardness (HB) |
| ≥885 | ≥735 | ≥12 | ≥45 | ≥55 | ≤217 |
Chemical properties
Carbon C: 0.18～0.24
Silicon Si: 0.17～0.37
Manganese Mn: 0.50～0.80
Chromium Cr: 0.70～1.00
Sulfur S: allowable residual content ≤ 0.035
Phosphorus P: Allowable residual content≤0.035
Nickel Ni: Allowable residual content ≤ 0.30
Copper Cu: allowable residual content ≤ 0.30
Molybdenum Mo: allowable residual content ≤ 0.15
20Cr seamless steel pipe
Chemical composition (%): Silicon: 0.17～0.37
Mechanical properties: Tensile strength σb (MPa): ≥835
Yield strength σs (MPa): ≥540
Elongation δ5 (%): ≥10
Area shrinkage ψ (%): ≥40
impact absorption energy Ak (J) ≥47
hardness: annealed or high temperature tempering supply state hardness ≤156HB
sample size: sample size 15mm
Heat treatment specification and metallographic structure:
Heat treatment specification: quenching temperature (℃) 880 for the
first time, 780 to 820 for the second time, coolant water and oil.
Tempering temperature (℃) 200, coolant water, air.
Welding performance:
20Cr parts with thickness greater than 15mm need to be preheated to
100~150℃ before welding. If it is not required to be high,
preheating may not be performed before welding, and tempering heat
treatment may not be performed after welding.
product detail
Q: Would you provide samples For free?
A: Yes . with on stock specification We provide samples For Free .
Freight charge collect
Q:What information should i provide to source for the right
products ?
A: Material grade, width, thickness, coating and Purchase quantity
, Expected lead time ,etc
Q: What are the shipping ports?
A: Under normal circumstances, we ship from Shanghai, Tianjin, Qingdao, Ningbo ports, you
can choose other ports according to your needs.
Q: About product prices?
A: Prices vary from period to period due to cyclical changes in the
price of raw materials.
Q: How long does your delivery time take?
A: In general, our delivery time is within 5-45 days, and may be
delayed if the demand is extremely
large or special circumstances occur.
Q: Can I visit your location?
A: Of course, we welcome customers from all over the world to visit
our factory. However, some
of the plants are not open to the public.
Q: Does the product have quality inspection before loading?
A: Of course, all our products are strictly tested for quality
before packaging, and unqualified
products will be destroyed.We provide All original Mill test
certificate and support third party inspection.
Q: How to pack the products?
A: The inner layer has a waterproof paper outer layer with iron
packaging and is fixed with a fumigation
wooden pallet. It can effectively protect products from corrosion
during ocean transportation.
Q: What is your working time?
A: In general, our online service time is Beijing time: 8:00-22:00,
after 22:00,
we will reply to your inquiry during the next working day.
