what grade is 4140 steel？4140 alloy steel material is a high quality Quenched and Tempered Alloy Structural steel,
what grade is 4140 steel？It belong to the high quality medium carbon alloy steel, Oil Quenched & Tempered Hardenss is 28-34 HRC.
what grade is 4140 steel，4140 Annealing delivery hardenss less than 250HB.
4340 steel bar suppliers with full dimension.
4340 steel bar suppliers with 3~5 days delivery.
4340 steel bar suppliers with natural condition and Q+T condition.
what type of steel is 4140?4140 alloy steel is one of the gearing steel, it containing low molybdenum,and 0.9~1.2% chromium
what type of steel is 4140?please check more pf our vlog,you will know more.
4140 steel plate equivalent Germany standard 42CrMo4
4140 steel plate equivalent Japanese standard SCM440
4140 steel plate equivalent Chinese standard 42CrMo
4140 plate material in the line for unloading.
There are 300 tons 4140 plate material reach our warehouse every month.
We keep 2 kind of condition,Hot roll Q+T &Hot roll Normalized.
4140 plate material Q+T are suitable for American Market.
4340 steel plate cutting by ourselves,multiple size cutting.
20 years experience 4340 steel plate trading.Let’s check it out.
First of all, we need to understand what material is 4140.
The common antirust elements are Cr and Ni. The Cr content of 42CrMo is only 0.9-12.0; The requirement of Ni is less than 0.3, the general antirust CR at least to reach 12.5 above, Ni to reach 5.00 above to have the basic antirust ability.
with high strength and toughness, good hardenability, no obvious temper brittleness, high fatigue limit and multiple impact resistance after quenching and tempering treatment, and good low temperature impact toughness. The steel is suitable for manufacturing large and medium-sized plastic moulds requiring certain strength and toughness.
This kind of steel has no anti-corrosion performance, of course, it is easy to rust. It can’t be said that it’s easy to rust. It mainly depends on preservation.
To prevent rust, it is necessary to carry out surface anti-corrosion treatment. If the surface is oiled, it is not easy to rust. The most commonly used is the surface blackening treatment
4140 steel plate hardness：28~32 HRC is Q+T Condition
4140 steel plate hardness:≤220HB is Anneal Condition
4140 steel plate hardness:220~275 HB is Normallized Condition
4140 dcf plate with over 1000 tons in stock.
Our warehouse located in DongGuan City,near to Hong Kong & ShenZhen city.
Welcome to check our workshop and 4140 dcf plate inventory.
Today,there are more 4140 dcf plate on the way to our warehouse.
4140 hr ar plate astm a829 for Q+T condition,
Today we are loading 4140 hr ar plate astm a829 in Q+T condition,
Around 55 tons 4140 hr ar plate astm a829 in fast delivery,as we keep over 1000 tons in stock.
Complete dimention for 4140 hr ar plate astm a829
Otai Special Steel is stable supplier for Voestalpine & Thyssenkrupp, with ISO9001 certified. We Supply Top Quality Tool Steel and Alloy Steel.
