Hot Rolled High Stength Alloy Structural Steel 22NiCr14 (1.5752) 20Cr2Ni4A Round Bar OD 20mm With Heat Treatment
The material 20Cr2Ni4A is a kind of structural alloy steel. 20 cr2ni4a is high quality alloy steel and it has high strength,toughness and hardenability.For 20Cr2Ni4A steel, there is no direct quenching after carburizing in order to reduce surface residual austenite. 20Ci2Ni4A’s cutting and cold deformation plasticity is general and it has poor weldability.
20 Cr2Ni4A is widely used for large cross-section carburized parts, such as large gear, shaft, and conditioning components requiring high strength, and good toughness.
20Cr2Ni4A chemical composition %:
| Grade |
Chemical composition %: |
| C |
Si |
Mn |
P |
S |
Cr |
Ni |
| 20Cr2Ni4A |
0.17-0.23 |
0.17-0.37 |
0.30-0.60 |
≤0.03 |
≤0.03 |
1.25-1.65 |
3.25-3.65 |
20Cr2Ni4A mechanical properties:
| Grade |
Mechanical properties: |
Tensile strengthσb
(Mpa) |
Yield strengthσ0.2
(Mpa) |
Elongationσ5
(%) |
reduction of area
ψ (%) |
Hardness |
Notched bar impact strength
αkv (J/cm2) |
| min |
min |
min |
min |
max |
min |
| 20Cr2Ni4A |
1483 |
1292 |
13 |
57 |
434HB |
75 |
20Cr2Ni4A condition of delivery: heat treatment(Normalizing, Annealing, or high temperature tempering) or do not heat treatment state.
If you have need for 20Cr2Ni4A forged round bar, 20Cr2Ni4A forged square bar, 20Cr2Ni4A forged square bar, 20Cr2Ni4A forged shafts and 20Cr2Ni4A forged blocks. Please contact with us freely. Bebon will offer you more than your expect.
20Cr2Ni4A | 20Cr2Ni4A process | 20Cr2Ni4A heat treatment process
Update: 2015/3/18View: 1278
- Title: 20Cr2Ni4A | 20Cr2Ni4A process | 20Cr2Ni4A heat treatment process
- Mark: 20Cr2Ni4A
- Specification: Complete specifications
- Memo: 20Cr2Ni4A
- Price: USD
- Promotion: USD ( 0 Customers Bought)
Introduction
Product Name: Alloy structural steel
Steel: 20Cr2Ni4A
Digital Code: A43202
Steel Group Series: CrNiA
Implementation of the standards: GB / T3077-1999
Delivery status: hot-rolled or annealed, the specific delivery status should be indicated in the warranty book.
Steel: Xining Special Steel, Dongbei Special Steel, Chongqing Special Steel.
20Cr2Ni4A carburizing steel for high-strength alloy steel, with good mechanical properties, hardenability, strength and toughness are more than 12CrMi3 steel. 20Cr2Ni4A forging good performance, forging heating temperature of 1200 ℃, initial forging temperature of 1150 ℃, final forging temperature higher than 850 ℃, slow cooling after forging.
20Cr2Ni4A chemical composition range of values:
Note: The actual chemical composition of the steel quality books to prevail.
20Cr2Ni4A Carbon C: 0.17 ~ 0.23
20Cr2Ni4A Si Si: 0.17 ~ 0.37
20Cr2Ni4A Manganese Mn: 0.30 ~ 0.60
20Cr2Ni4A sulfur S0.035
20Cr2Ni4A phosphorus P0.035
20Cr2Ni4A chromium Cr: 1.25 ~ 1.65
20Cr2Ni4A Ni Ni: 3.25 ~ 3.65
20Cr2Ni4A copper Cu0.030
20Cr2Ni4A mechanical properties of a range of values:
Note: The actual mechanical properties of the steel quality books to prevail.
Tensile strength b (MPa)1175
Yield strength s (MPa)1080
Elongation 5 (%)10
Section shrinkage (%)45
Impact energy Akv (J)63
Impact toughness kv (J / cm2)78
Hardness269HB
Sample size: Sample size is 18mm rough
20Cr2Ni4A heat treatment process:
Quenching temperature: the first heating 880 ℃; the second heat 780 ℃; coolant: Oil
Tempering heating temperature: 200 ℃; Coolant: water, air
20Cr2Ni4A purposes:
For the manufacture of small and medium sized cars, tractor engine and transmission in gear, manufacture of high performance core part of carburized parts, cyanide parts, such as oil drilling and metallurgical open pit with claws and teeth cone body.
Note:
Hot this month alloy structural steel: 35CrMnSiA, 60Si2Mn, 30CrMnTi, 42CrMo, 16MnCr5,50CrVA, 15CrMo and so on.
General Applications
Widely used for stransmission system,motor of tractor and middle-small auto. Alternative 12CrNi3 to make higher class carburization and cyanide carburizing parts such as oil drilling,claws and cone for mining.
It is commonly used for carburized gears, pinions, shafts, bearings, piston rings, ring gears, crankshafts, etc.
Stock Size
| round bar |
Diameter |
12-380mm |
Sizes and Conditions
Our steel materials are in different sizes and conditions specially catered to our customers' needs. They come in round bars, flat bars, plates and blocks.
The conditions of the materials vary from pre-hardened, hot rolled,annealed, quenched and tempered to surface conditions such as black, pre-machined,griding and polish.
Why choose us?
Quality Assurance from government owned steel mills
we meticulously source materials only from steel manufacturers to ensure consistency in providing the finest quality steel products for our customers.
Being in the competitive market today, we clearly understand that customers are looking for products that are not only best in class but also affordably priced. We are confident that we are able to ful fil these two equally vital aspects -our customers' continuous support over the past two decades is the most heartfelt recognition to us.
Speedy and Timely Delivery
Knowing that delivering goods to customers' hands on time is as important as providing quality goods, we treat every business transaction as a priority. Be it a raw material or a finished material with machining or heat treatment, every effort will be made to get your purchase order to you in the shortest lead time.
Quality Commitment
In order to realise competitive products to fulfil our customers' demands and quality considerations, our integrated quality and work management system is continuously being improved and developed further. We document this for our customers by having our quality management system certified in accordance with ISO 9001. This measure is accompanied by audits and recertification's on a regularly prescribed basis.
Our service
We provide quality special steel for all industries.
Orders of any size, any length, ship fast
We carry a unique inventory of specialty special steel
Provide related value-adding services :
metal cutting, sizing, machining (blanking, milling, grinding), and heat treatment.
Sawing for small or large quantities, sawing-to-size.
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