Product Details

AISI 4140 CARBON ALLOY STEEL

1.Chemical Composition(%)

SAE 4140

C Si Mn P S Cr Ni Mo

0.42 0.30 0.60 ≤0.025≤0.0251.00≤ 0.250.20

2.Equivalent Grades

Alloy Steel 4140 DIN 42CrMo41.7225SCM440

3.Form&Size

1)Dongguan Yaoteng Special Steel Company are manufacturers and suppliers of SAE 4140 Tool Steel round bars, flat/square bars,plates,sheets.

2)SAE 4140 Tool Steel Size Available(Length can be customized):

4 Round bar
.

diameter 16-40mm 895usd/mt

diameter 45-100mm 875 usd/mt

diameter 105-200mm 900usd/mt

diameter 205-250mm 940usd/mt

5. Process flow

Electric arc furnace meltingRefining furnace Vacuum treatment furnace Cast ingot Steel ingot anneal Heating High-speed forging,refining forging Anneal,retarded cooling,air cooling Quenching and tempering tretment Finishing operation Text Finished products.

6. Heat treatment

Normalized / Annealed / Quenched / tempered

7. Delivery condition

Hot forged, black sur face or Turned (optional) , rough machined(optional)

8. Technical Data

Chemical Composition, Physical Properties and Mechanical Testing according to the customer's requirement

9. Certification

10.Hardening

11. Tempering

ISO9001:2008;SGS Test;Mill Certificate Test

Preheating from 600 to 650 ° C austenitizing

Heating to 550 - 650 ° C and maintenance regime, again depending on the mechanical

12. Competitive Advantage:

1. Good purity and homogeneity

2. Good machinability(Roughing, grinding and drilling)

3. Good dimensional stability during heat treatment

4. Excellent preparation for nitriding, both ionic and gaseous, induction hardening to increase the

Mechanical properties

5. Competitive price

6. Fast production leadtime

7. All the material are inspected with 3 times to meet the highly standards.

Product Description

The details of our Steel

1. Produce Standard: as the GB, AISI, ASTM, SAE, EN, BS, DIN, JIS Industry Standard

2. Produce processes: Smelt Iron -EAF smelt Billet - ESR smelt Billet -Hot rolled or forged get the steel round bar and plate

3. Heat treatment:

Normalized / Annealed / Quenched+Tempered

4. Quality assurance:

All order we can received Third party inspection, You can let SGS, BV,.. and others test company test and inspect our products before Goods shipping.

Steel producting process

Our supplier Product Certifications

Packaging & Shipping

Shipping

1. FedEx/DHL/UPS/TNT for samples, Door-to-Door;

2. By Air or by Sea for batch goods, for FCL; Airport/ Port receiving;

3. Customers specifying freight forwarders or negotiable shipping methods!

Delivery Time: 3-7 days for samples; 5-25 days for batch goods.

Payment Terms

1.Payment: T/T, L/C, Western Union, MoneyGram,PayPal; 30% deposits; 70% balance before delivery.

2.MOQ: 1pcs

3.Warranty : 3 years

4.Package Informations: 1) EXPORT, In 20 feet (GW 25 ton) or 40 feet Container (GW 25 ton)

2)as customer's requirement

Packaging & Shipping, Trade Terms

Our Services

Why Choose us?

7*24 online EMAIL service!

1.We are Alibaba Assessed 3 years Gold Supplier.

2.We Have the factory and special trade team,best production capability ,best quality control, Best Service .

3.Inspected by the Inspection Institution of BV, SGS.

4.100% QC inspection Before Shippment.

5.Welcome third party company Inspection,competitve price.

The Specifications of our Steel

Model	Diameter (mm)	Thickness (mm)	Width (mm)	Length (mm)	Annealling Hardness (HB)	Q+T hardness (HRC)	Surface Treatment
Hot rolled round bar	5~300	/	/	3000~5800	<=255	28~34	Black Oxidation layer or Bright
Forged round bar	200~1700	/	/	1000~4000	<=255	28~34
Hot rolled steel plate	/	1~250	610~3000	3000~12000	<=255	28~34
Forged steel plate	/	200~810	210~1250	2000~5000	<=255	28~34
The specification can be customised

Product series

Hot work tool steel	AISI H10, H10A, H11, H12, H13, H21, L6, etc.
	DIN 1.2343, 1.2344, 1.2365, 1.2367, 1.2581, 1.2714, 1.2885, etc.
	JIS SKD5, SKD6, SKD61, SKT4, etc.
Cold work tool steel	AISI D2,D3,D5,D6,D8,A2,O2,O1 etc.
	DIN 1.2601,1.2379,1.2080,1.2363,1.2842,1.2419,1.2510,1.2550,1.2767 etc.
	JIS SKD1,SKD11, SKS3 etc.
Alloy structural steel	AISI 4140,4340,5140,4130 etc.
	DIN 1.7225,1.6511,1.7035,1.7220
	JIS SCM440
Plastic mould steel	AISI P20, P20+Ni, 420 etc.
	DIN 1.2083,1.2311, 1.2316,1.2738 etc.
	JIS NAK80
High speed steel	AISI T1,M2,M35,M42
	DIN 1.3355,1.3343
	JIS SKH2,SKH51