30CrMo AISI4130 Hot Rolled Boiler Steel Tube Alloy Steel Tube​

Specification

This steel has high strength and toughness, high hardenability, critical hardenability diameter in oil 15 ~ 70mm; The steel also has good thermal strength. It has sufficient high temperature strength below 500℃, but its strength decreases significantly at 550℃. When the alloy element is in the lower limit, the welding is quite good, but when it is close to the upper limit, the weldability is medium, and the welding needs to be preheated to more than 175℃ before welding. The steel has good machinability and moderate plasticity during cold deformation. The first kind of temper brittleness occurs in the range of 300 ~ 350℃ during heat treatment. Have a tendency to form white spots.

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FAQ
Q: Do you provide samples ?How can I get a sample to check your quality? Is it free or extra ?

A: Free samples are available for your checking and testing. And to get free samples, you need to send us you detailed receiving address (including post code) and your DHL/FedEx/UPS account for collecting samples, courier cost will be paid in your side.

Q: How is the quality of your products?

A: Our products are manufactured strictly according to national and international standard, and we take a test before delivered out. If you want see our quality certifications and all kinds of testing report, please just ask us for it.

Q: Are you factory or trader?

A: Our company has been manufacturing and selling steel products for many years since 2009. We've gained our Export Right and become an integrated company of industry and trade in order to satisfy buyer's multi-request on different material and products.