Home
Products
About Us
Factory Tour
Quality Control
Contact Us
Request A Quote
News
Home ProductsSpecial Tool Steel

Hot Forged Q+T Special Tool Steel Solid Round Bar High Fatigue Strength

China Guangzhou Changfeng Steel Co., LTD certification
China Guangzhou Changfeng Steel Co., LTD certification
Gold supplier! Arranged shipment very fast, quality is super good. They are one of our best suppliers, will do more business with them in the future!

—— Ms Nguyen Thi Hong

We bought 7 containers from them in 2017, no quality problems. The boss is very nice and professional, good business parner!

—— Mr. Wan Rusli

Good job! Shipment was arranged fast, giving lots of good suggestions before place order, saved me time and money.

—— Mrs. Natntia Jitaniyompanich

I'm Online Chat Now

Hot Forged Q+T Special Tool Steel Solid Round Bar High Fatigue Strength

Hot Forged Q+T Special Tool Steel Solid Round Bar High Fatigue Strength
Hot Forged Q+T Special Tool Steel Solid Round Bar High Fatigue Strength Hot Forged Q+T Special Tool Steel Solid Round Bar High Fatigue Strength

Large Image :  Hot Forged Q+T Special Tool Steel Solid Round Bar High Fatigue Strength

Product Details:

Place of Origin: China
Brand Name: CF STEEL
Certification: ISO, Mill Certificate
Model Number: 1.7225 SAE4140 EN19 SCM440 42CrMo

Payment & Shipping Terms:

Minimum Order Quantity: 3MT
Price: USD800-900/MT
Packaging Details: Export Standard Packing or Customers'demand
Delivery Time: 7-15 days
Payment Terms: L/C, T/T
Supply Ability: 1000t/Month
Detailed Product Description
Standard: AISI,DIN,ASTM,GB Surface: Machined,black,Plain,mill Finish Or Peeled Finish,Grinding
Technique: Forged,Hot Rolled,Hot Work Mould Steel Test: SGS / Ut 100% / Element Testing
Delivery Condition: Hot Rolled, Forged Ut Standard: Sep 1921-84 Class 3 C/C To D/D
Sample: Free Heat Treatment: Annealing/Q+T
Hs Code: 722540 & 722830
High Light:

alloy tool steel

,

carbon tool steel

Hot Forged Q+T Black Surface Alloy Steel Round Bar SAE4140 SCM440 42CrMo 1.7225 EN19

Equivalent grades:

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


SAE 4140 alloy steel is chromium, molybdenum, manganese containing low alloy steel. It has high fatigue strength, abrasion and impact resistance, toughness, and torsional strength.

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


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.

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.

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


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)

Ready Stock:
Round Bar diameter 14-460mm.All the sizes as require can be customerized as fresh production with MOQ.

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


Product pictures:
Hot Forged Q+T Alloy Steel Special Steel SAE4140 SCM440 42CrMo 1.7225 EN19

Hot Forged Q+T Special Tool Steel Solid Round Bar High Fatigue Strength 0
Hot Forged Q+T Special Tool Steel Solid Round Bar High Fatigue Strength 1
Delivery time
For abundant stock, 15-20 days.For customized products, 30-35 days.
We have full set of equipement (sawing machine/grinding/polishing machine) to make customer's specification.

Our service for you
Pre-sale service

1) Sample can be offered with sample charge can courier fee by buyer's side;

2) We have full stock, and can deliver within short time. Many styles for your choices;

3) Good Quality + Factory Price + Quick Response + Reliable Service, is what we are trying best to offer you;

3) All of our products are produce by our professional workman and we have our high-work-effect foreign trade team, you can totally believe our service.

After you choose

1) We will count cheapest shipping cost and make invoice to you at once;

2) Check quality again, then send out to you at 1-2working day after your payment;

3) Email you the tracking no, and help to chase the parcels until it arrive you.

After-sale choose

1) We are very glad that customer give us some suggestion for price and products;

2) If any question, please contact with us freely by e-mail or telephone.

 

 

Contact Details
Guangzhou Changfeng Steel Co., LTD

Contact Person: Echo

Tel: +86 18148729336

Send your inquiry directly to us (0 / 3000)