| Type: | Seamless |
|---|---|
| Technique: | Hot Rolled |
| Material: | Carbon Steel |
| Surface Treatment: | Black |
| Usage: | Pipeline Transport, Boiler Pipe, Hydraulic/Automobile Pipe, Oil/Gas Drilling, Food/Beverage/Dairy Products, Machinery Industry, Chemical Industry, Mining, Construction & Decoration, Special Purpose |
| Section Shape: | Round |
| Samples: |
|---|
| Customization: |
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1. Technology of Hot Rolled, Cold Rolled or Cold drawn.| 5120 20CrMnTi |
Carburized carbon steel can also be used as quenched and tempered steel. After quenching and low temperature tempering, it has good comprehensive mechanical properties and low temperature impact toughness. After carburizing, it has good wear resistance and bending strength. The heat treatment process is simple, and the hot and cold working properties are good, but there is a tendency to temper embrittlement during high temperature tempering. Used for manufacturing various important parts in automobiles and tractors with a cross-sectional size of less than 30 mm, such as gear shafts, gear rings, gears, cross shafts, main shafts supported by sliding bearings, worms, and tooth clutches, that are medium or heavy duty, impact resistant, and high-speed. |
| 30CrMnTi |
It is mainly made of titanium carburized carbon steel, sometimes used as quenched and tempered steel. After carburizing and quenching, it has good wear resistance and high static strength, and has a good heat treatment process. After carburizing, it can be directly cooled and quenched, and the quenching deformation is very small. During high-temperature tempering, it has tempering brittleness.". It is used for manufacturing carburized parts with extremely high core strength, such as gear shafts, gears, worms, etc. It can also be used for manufacturing quenched and tempered parts, such as driving gears with large cross sections on automobiles and tractors. |
|
Material
|
C
|
Si
|
Mn
|
P
|
S
|
Cr
|
Ni
|
Cu
|
|
ASTM 5120 GB 20CrMnTi
|
0.17-0.23
|
0.17-0.37
|
0.80-1.10
|
0.030
|
.0.030
|
1.00-1.30
|
0.30
|
0.30
|
|
Thickness (diameter, side length)
t mm |
Tensile strength
σb Mpa |
Yield point
σs Mpa |
elongation
δ5 % |
hardness
HBW |
Impact toughness value α kv (J/cm2)
|
Impact energy Akv (J)
|
|
t=15
|
≥1080(110)
|
≥835(85)
|
≥10
|
≤217HB
|
≥69(7)
|
≥55
|
Allowable adjustment range of heat treatment temperature: quenching ± 15 ° C, low temperature tempering ± 20 ° C, high temperature tempering ± 50 ° C
The mechanical properties listed in the table are applicable to the steel with a section size of no more than 80mm. For steel with size greater than 80 to 100 mm, the elongation after fracture, reduction of area and impact absorption energy are allowed to be reduced by 1% (absolute value), 5% (absolute value) and 5% respectively compared with those specified in the table; For steel with size greater than 100 to 150 mm, the elongation after fracture, reduction of area and impact absorption energy are allowed to be reduced by 2% (absolute value), 10% (absolute value) and 10% respectively compared with those specified in the table; For steel with size greater than 150 to 250 mm, the elongation after fracture, reduction of area and impact absorption energy are allowed to be reduced by 3% (absolute value), 15% (absolute value) and 15% respectively compared with those specified in the table;
Boron steel can be normalized before quenching, and the normalizing temperature should not be higher than its quenching temperature. The first quenching of chromium-manganese titanium steel can be replaced by normalizing
During tensile test, no yield can be found on the sample steel and the yield point cannot be measured σ S, the specified residual elongation stress can be measured σ< sub> τ 0.2
he hardness in the table is the value of Brinell hardness HB10/3000 in the steel annealing or high-temperature tempering supply state
Heat treatment system:
The first quenching heating temperature is 880 ° C, the second quenching heating temperature is 870 ° C, oil cooling; Tempering temperature 200 ° C, water and air cooling.
| Tolerances | ||
| Pipe types | Pipe sizes(mm) | Tolerances |
Hot rolled |
OD<50 | ±0.50mm |
| OD≥50 | ±1% | |
| WT<4 | ±12.5% | |
| WT 4~20 | +15%, -12.5% | |
| WT>20 | ±12.5% | |
Cold drawn |
OD 6~10 | ±0.20mm |
| OD 10~30 | ±0.40mm | |
| OD 30~50 | ±0.45 | |
| OD>50 | ±1% | |
| WT≤1 | ±0.15mm | |
| WT 1~3 | +15%, -10% | |
| WT >3 | +12.5%, -10% | |
1. Bundle and pack.
2. Warning for inclined end or flat end or according to buyer's requirements.
3. Marking: According to customer requirements.
4. Apply varnish.
5. Plastic covers at both ends.
Q1:who are we?
A:We are based in Shandong, China, start from 2022,sell to North America(60.00%),Western Europe(14.00%),South America(6.00%).
There are total about 11-50 people in our office.
Q2. how can we guarantee quality?
A:Always a pre-production sample before mass production;
Always final Inspection before shipment;
Q3.what can you buy from us?Which ports are accepted for delivery?
A:Copper,Aluminum,Mould steel, Seamless carbon steel,Precision steel pipe,The steel plate,Alloy steel,Titanium,Custom machine parts.It can be delivered from Qingdao, Tianjin, Shanghai, Guangzhou and other ports.
Q4.why should you buy from us not from other suppliers?
A:Shandong Meide Import and Export Co., Ltd. has 25 years of production experience. With advanced precision production equipment
and modern large warehouses, has a stockpile of 200,000 tons of goods, has a number of long-term stable cooperative customers.
Q5.what services can we provide?
A:Accepted Delivery Terms: FOB,CFR,CIF,EXW;
Accepted Payment Currency:USD,EUR,JPY,CAD,AUD,HKD,GBP,CNY,CHF;
Accepted Payment Type: T/T,L/C,D/P D/A,PayPal;
Language Spoken:English,Chinese
Q6.Can we get the some samples?Any charges?
A:Yes,you can get available samples in our stock.Free for real samples,but customers need to pay the freight cost.
Q7.How can we get your price ?
A:We need below information to quote for you:
1). Product Name
2). Standard
3). Material Grade (Chemical Composition)
4). Dimension
5). Quantity
6). The Drawing for Special Parts
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