Product Name : 440c stainless steel round bar Round Bar : Diameter
Product Information :
|Surface||According to order|
|Delivery state||Annealing/Quenching and tempering|
|Length||according to order(1.5m--6m)|
|Tolerance||according to order|
|Product Keywords||super duplex stainless steel plate price per kg,steel round
bar,steel plate 3mm thick|
EN ISO 10250
Surface Treatment Bar: Origin Black, Origin Annealing bright,
Turned, Peeled, Grinded
Heat Treatment/ Anealing
Preheat the steel carefully, then raise the temperature to
1150-1200°C for forging. Do not forge below 850°C.
Heat the AISI 4140 slowly to 800-850°C and allow enough time for
the steel to be thoroughly heated. Cool slowly in the furnace to
480°C followed by air cooling.
When parts are heavily machined, ground or otherwise subject to
cold work, stress relieving will be beneficial prior to hardening.
AISI 4140 steel is usually supplied ready heat treated to 18-22HRC.
If further heat treatment is required annealed AISI 4140 should be
heated slowly to 840-875°C and after adequate soaking at this
temperature quench in oil. Temper as soon as the tools reach room
Heat the AISI 4140 carefully to a suitable temperature selected by
reference to a tempering chart or table (usually between 550-700°C,
soak at the temperature for 2 hours per 25mm of ruling section,
then allow to cool in air. Tempering between 250-375°C is not
advised as tempering within this range will seriously reduce the
Our products will be from black round bar. We will order the raw
material from first class steel making companies to guarantee the
inner quality. You can also lock the raw material manufacturer for
We will continually improves and expands the quantity and quality
of our product which exactly meet customers need. We do whatever it
takes to make our clients happy.
We will develop long-term commercial and technical partnerships
with customers. And we are committed to continual quality
improvement of all internal processes. The success of our quality
program is affirmed by our strong customer retention rate.
Achieving the ISO 9001:2008 Certification is just one example of
our Products’ dedication to quality and continuous improvement.
Each employee is responsible for understanding company expectations
and adhering to the procedures of our Quality Management System.
Our Products ensures customers receive the material ordered with
accurate supporting paperwork. Customers can count on proper
documentation, on-time performance and effective follow-up.
Since beginning operation in 1996, We has been dedicated to
providing more than just material supply, We has helped customers
reduce costs and improve the bottom line. This approach to
partnering with customers has made our Products a leader among
Steel Round bar and one of the fastest growing companies in China.