Home Companies Guangzhou Changfeng Steel Co., LTD

34 HRC SCM440 1.7225 4140 Hot Rolled Alloy Steel Plate

Active Member

Contact Us

[China]

Address: 广州市黄埔区大沙地东路403号B802房(仅限办公）

Contact name:Echo

Guangzhou Changfeng Steel Co., LTD

34 HRC SCM440 1.7225 4140 Hot Rolled Alloy Steel Plate

Country/Region	china
City & Province	guangzhou guangdong
Categories	Metal Electroplating Machinery

Product Details

Annealed Steel Plate of SCM440, 1.7225, 4140 For Hot Rolled Alloy Steel

Perform Standard: GB/T 3077-1999

Equivalent grades:

GB(China)	DIN(German)	AISI(USA)	JIS(Japan)
42CrMo	1.7225	SAE4140	SCM440

Chemical Composition(%)

C	Si	Mn	Cr	Mo	P	S	Ni
0.38~0.45	0.17~0.37	0.60~0.90	0.90~1.20	0.15-0.25	≤0.018	≤0.030	≤0.012

1, Application
It used for section large forgings, such as locomotive traction gears, with supercharger drive gear, the rear axle, the connecting rod and the spring load greatly clip,oil drill pipe joints and fishing tools,etc.

2, Feature
1) Weldability suffers with increasing chromium content;
2) High temperature strength and high pressure hydrogenation properties are promoted by chromium and molybdenum;
3) Molybdenum significantly reduces temper brittleness;
4) Chromium renders steel oil hardenable and increase hardenability;
5) Chromium molybdenum high tensile steel with yield strength of 550N/mm2;

3, Recommend heat treatment:

Quenching			Tempering
Heating temperature/ºC	Cooling way	Hardness (HRC)	Tempering temperature/ºC	Cooling way	Hardness (HRC)
850-880
	Oil Cooling	50-52	450-650	Air	25-40

4,Mechanical Properties:
Tensile strength:σb (MPa):≥1080(110)
Yield strength:σs (MPa):≥930(95)
Elongation:δ5 (%):≥12
Section shrinkage:ψ (%):≥45
Impact work:Akv (J):≥63
Impact toughness value:αkv (J/cm²):≥78(8)

5,Ready Stock:

Grade	Size(mm)
SCM440 Plate	Thickness	Width	Length
	12-280	2200	5800
SCM440 Round Bar	Diameter		Length
	16-450		3000-6000

6,Delivery state:
Hot rolled, Heat Treatment,black, hardness or tempered hardness:28-34 HRC.
Annealing:HBS<=235.

7, Delivery time
For abundant stock, 7-15 days.For customized products, 30-50 days.
We have full set of equipement (sawing machine/grinding/polishing machine) to make customer's specification.

8,Our service:

1) sizes, materials and others are all at your requirements and can be changed;

2) Price varies on materials, dimensions, finish craft and different payments;

3) We are direct manufacture in machinery manufacturing work with experience of several decades;

4) Detail production design will be made according to information you offered;

5) We have adequate inventory, so that we can quick delivery;

6) The most important is that we have advanced equipment.
Listed specifications are only typical grades; products of required specifications can be developed/produced per international, Chinese or industry standards, or based on agreements with customers.

Product show:

Strict Quality Control

Loading Photo

About us:
Guangzhou ChangFeng Steel Co., Ltd. is a professional special steel company, which specialized in exporting mould steel products based in China. With more than 20 years experience in special steel industry, our main products are Plastic Mould Steel, Hot Work Mould Steel, Cold Work Mould Steel, Alloy Structural Steel, Tool Steel, Stainless Steel, Carbon Steel and Forged Block.
To ensure provide high quality products to customers, we have close cooperation with many Chinese first class special steel enterprises, including Baosteel Group, Dongbei Special Steel, Changcheng Special Steel, Hongsheng Heavy Industry, Xingcheng Special Steel, Daye Special Steel.
We have thousand tons of stock materials in our own factory and also can provide processing services to customers. We are full of export experience for many years, the product covers America, Germany, France, Italy, Turkey, Singapore, Thailand, Malaysia, Vietnam, Taiwan, and Middle-East.

After years of development, the company has established a complete quality management and export service system. We have a group of experienced and competent elites and is capable of offering the best service to clients.
Our company equips with large-sized Vertical saw machines, Horizontal saw machines, Milling machines, Grinding machines and other advanced equipments to provide customers with cutting and other processing services.
All the products should be inspected the metallographic analysis, hardness, ultrasonic flaw detection and other strict inspection processes, which meet the standards of DIN, AISI, JIS and GB to ensure their function and quality.