How to Define a Good 4140 Plate Supplier ? 

First, the supplier should be experienced about the 4140 steel grades as per standard of ASTM A29 standard. The chemical composition and other property should be as per standard. This is the basic.

Second, if the supplier keeps 4140 steel plate stock with complete 4140 plate sizes / thickness or not. For example, 4140 sheet, 1.5mm thickness, 5 tons,  12mm, 6tons, 20mm, 5 tons… Then when anytime, customer need different4140 steel sizes with fast delivery, the supplier could process the order in very short time and delivery. Besides, when customer needs 4140 flat bar with different sizes, the supplier should be equipped with band saw to cut to width according to given spec and quantity. Like Otai, there is around 1000 tons stock of 4140 steel plate for customer’s choose.

4140 plate supplier for Uddeholm 4140 steel plate stock for sale

Third, if the 4140 plate supplier is also able to supply material with different heat treatment condition and hardness, it would be good. Usually, it is usually supplied as 4140 hot rolled condition. Most of stock materials are hot rolled 4140 plate / flat bar. But some customer also need 4140 annealed plate, or Q+T plate with higher hardness. So, if the supplier could supply all different 4140 plate steel. It would be good for customer.

Fourth, if the price of 4140 plate material would be also good. It would be perfect. Or there would be regular 4140 steel plate for sale, it would be much attractive.

What You Should Care for 4140 Steel Material ?

Because it’s very common for 4140 round bar, but it’s not that popular for 4140 steel plate or 4140 flat bar. So, it’s not that easy to find a reliable 4140 steel plate supplier. But when you find it, you should care about something:

Hardness: Hardness of different condition of 4140 plate. Generally, the 4140 annealed plate hardness is max 255HB, while the quenched and tempered (Q&T) plate 28-32HRC (280-320HB). So, when you have requirement of hardness, you should make it clear to supplier, to avoid the wrong material condition.

Properties: When you have special mechanical properties, you would need heat treated plate for sure.

Equivalent: There are 4140 steel plate equivalent steel grades, that is, 42CrMo4 / 1.7225 plate or SCM440 plate. You would need to specify 4140 grade if you don’t accept equivalent. You could see the difference in this post 4140 | 42CrMo4 | SCM440.

 

Otai is the reliable supplier, also 4140 plate supplier for Uddeholm. Reliable supplier with complete range of sizes and ability for heat treatment and cutting to size. Welcome for steel 4140 plate request anytime.

 

Mr. Jeremy H.

Mobile/WhatsApp: 0086-13610149979

Tel: 0086-769-23190193

Fax: 0086-769-88705839

Email: jeremy@otaisteel.com