New logo and new start in 2019
Since the Jan 1st, the new logo would be officially [...]
15 Common Applications for Versatile 4140 Steel
AISI 4140 steel grade is a versatile steel grade. 4140 material is widely used in a lots of industrial fields. It is a chromium-molybdenum alloy steel. Here you have common 15 applications listed.
Steel Comparison: 4130 VS 4340 Steel
You will find the chemical and mechanical properties comparison between steel 4130 vs 4340 steel grades in this post. And it may help for machining purposes and as a reference for your purchasing 4130 steel and 4340 steel.
(Nov 25th Expires) ESR, Turned D2 Round Bar Promotion !
We have promotional offer for ESR, turned, AISI D2 round bar, which will expire Nov 25th, Take Action Now !
EU action against Chinese steel exports won’t solve industry problems
The European Union’s call to step up measures on imports of Chinese steel products will not solve the problems facing the global steel industry, but will affect the international trade order, China’s Commerce Ministry said on Monday
H13 Tool Steel Promotion (Until Mar-15th only)
H13 Tool Steel Materials for Promotion. Deadline: March-15th ! Take actions before all materials sold out ! All materials are in good quality with EAF/ESR process and vacuum degassing. All materials are in forged, annealed, black condition, and the UT class meet SEP1921-84 E/e class. Click in for details !
ISO 9001 certificate
Otai Special Steel Co is now ISO 9001:2008 certified. We have completed the ISO 9001 auditing and our ISO 9001 certificate is released. Welcome customers all over the world to get in touch with us for your tool steel and engineering steel requests.
What is the Difference Between ISO 4957, BS EN ISO 4957 and DIN EN ISO 4957 ?
We compare differences between ISO 4957, EN ISO 4957, BS EN ISO 4957 vs DIN EN ISO 4957 tool steel standard. You could also have other issues that should be cared about. Check it out for details.
A2 vs O1 Steel, Brief Comparison
A2 steel is knows as air harden steel while O1 steel is oil harden steel. Here we briefly compare this two tool steel grades as follows. A2 tool steel belongs to A-Group in ASTM A681, which have high hardenability and may be hardened in air. O1 tool steel belongs to O-Group in A681 standard, which must be hardened by quenching in oil.
EN9 vs EN19 Steel: What is the Difference ?
EN9 vs EN19 Steel: both belong to BS 970 standard. but en9 steel is carbon steel while en19 steel is alloy steel. you have the chemical composition properties. Check for more details now.