• Wuxi Jinlai Mechanical Processing Co., Ltd.
    John Fairbank
    stainless steel strip with good quality and the Sales clerk service is very good.i like this company i hope can work with your again
  • Wuxi Jinlai Mechanical Processing Co., Ltd.
    Shipment speed is very fast, and the requirements can meet me. Salesman is very responsible.
  • Wuxi Jinlai Mechanical Processing Co., Ltd.
    Fierce Urchin
    good ,the galvanized steel coil quality is good and i donot see the broken on them.that is nice
Contact Person : Jo Yuan
Phone Number : +86-18706170710
WhatsApp : +8618706170710

40CrMo 20CrMo 42crmo4 Round Bar 320mm Alloy Steel Products

Place of Origin: CHINA
Brand Name: JIN LAI
Certification: ISO
Model Number: ASTM 1045/GB 45/JIS S45C/SS400
Minimum Order Quantity: 5 ton
Price: negotiable based on the quantity
Packaging Details: Standard seaport packing or as custom request
Delivery Time: 10-30 days
Payment Terms: T/T, Western Union, L/C
Supply Ability: 6000 tons per month
Product Details
Grade: ASTM 1045/GB 45/JIS S45C/SS400, ASTM 1045/GB 45/JIS S45C/SS400 Standard: AISI, ASTM, BS, DIN, GB, JIS
Length: 3-12m Diameter: 16mm-320mm
Surface Treatment: Black Tolerance: ±5%
Special Use: Free Cutting Steel Technique: Hot Rolled
Application: Structural Steel Bar
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42crmo4 Round Bar


40CrMo Round Bar


320mm Alloy Steel Products

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Product Description



40CrMo 20CrMo High Tensile Strength 42crmo4 Alloy Round Bar Steel




Products round bar
Material SS400 S45C S20C STUB GCr15
Standard ASTM A240,GB/T3280-2007,JIS4304-2005,ASTM A167
Length 3-12m
Size 8-400mm
Application ships building industry,petroleum,chemical industries, war and electricity industries, food processing and medical industry, boiler heat exchanger, machinery and hardware fields.
Payment Terms L/C , T/T or Western Union




Machinability is the main property of all free-cutting steels. It means that they are suitable to be machined with shaving removal at the maximum possible speed ensuring the least tool wear, the absolute compliance with dimensional standards and the optimal surface finish of the piece.
This is accomplished by means of maximum addition of Sulphur (and in some cases of Lead as well), that enable the steel to fragment the shaving and lubricate the tool. Such a situation naturally goes to the detriment of the mechanical properties: it is precisely for this reason that free-cutting steels are employed for large mass components which are subject to low stress and not to fatigue tests.





Round Bar   Round Bar
Material Dia (mm) Dia(mm) Length(m)
Q235B/HPB300 8-16MM 8-16 9
SS 400Cr 16-200 16-45 5.3-12
S 20C/20# 22-260 48-95 4.9-9
S 45C/45# 22-260 100-260 4.5-10.5




Standard seaworthy export packing, other types of packing can be customized as every requirement.

Shipping packaging

Bundled with firm steel straps, easy for loading and unloading.


Shipping time

5-7 work days after delivery

Shipping way


Shipping port


The heat treatment process

Annealing Heated to 900 ±20ºC in a hydrogen atmosphere
Holding time, h 1 hour
cooling With speed not more than 5 ºC / min. cooling to below 200 ºC



1. What's the minimum quantity customer can order?
If we have your size in stock, we can provide any quantity you want.
If the size is not in stoct, our MOQ will be about 30kgs.

2. Customer do not have express account. How will us arrange the delivery for sample order?
Just need to provide your address information, we will check the express cost, you can arrange the express cost together with sample value.


3.What's our payment terms?
We can accept LC T/T payment terms, it also depending on delivery and total amount. Let's talk more in details after getting your detailed requirements.


4.Do you provide free samples?
If you want several meters and we have stock of your size, we can provide, customer need to bear the International express cost.


5.What's our working time?
We will give you reply through email/phone Online contact tool within 24 hours. No matter working day or holidays.


40CrMo 20CrMo 42crmo4 Round Bar 320mm Alloy Steel Products 0