Datong Hydraulic

  SCM430 is a chromium-molybdenum alloy steel as per Japan Standard. JIS SCM430 steel contains a lower carbon content but provides better weldability comparing with SCM440 Steel.   SCM430 round bar   is frequently applied to the gas & oil area.Typical applications include components such as valve  bodies,pumps and hydraulic cylinder fittings like   cylinder rod . Chemical Composition National Standard Grade C% Si% Mn% Cr% Mo% P% S% DIN 25CrMo4 (1.7218) 0.22-0.29 ≤0.4 0.6-0.9 0.9-1.2 0.15-0.3 ≤0.025 ≤0.035 AISI/SAE 4130 0.28-0.33 0.15-0.35 0.4-0.6 0.8-1.1 0.15-0.25 ≤0.035 ≤0.04 JIS SCM430 0.28-0.33 0.15-0.35 0.6-0.85 0.9-1.2 0.15-0.3 ≤0.035 ≤0.04 GB 30CrMo  0.26-0.34  0.17-0.37  0.4-0.7  0.8-1.1  0.15-0.25  ≤0.035  ≤0.035 SCM430 ROUND BAR FORGING Forging temperature of AISI 4130 steel should be carried out between 950℃-1200℃,The lower the forging-ending temperature ,the finer the grain size .Hold suitable time for the steel to be uinformly heated before forge, but don’t forge below

  Hydraulic ram cylinders   are typically used to give vertical motion, including lifting loads in a vertical direction. Such a cylinder is also used to provide the motion in a horizontal direction but needs attention and suitable guides to guide the motion. Single-acting hydraulic cylinders that have no pistons but have large  cylinder rod s are called rams. These rams operate exactly like the conventional single acting hydraulic  cylinders. However, they use large diameter rods in place of pistons and piston seals in their designs. Thus, in place of pistons, rams have high-pressure cap-end ports. They also do not have any low-pressure rod-end ports. Rams are generally cheaper than their conventional single-acting cylinders counterparts.

  EN8 round steel bar   has very widely usages in many industry since it has very high strength. It's a kind of unalloyed medium carbon Steel (BS 970 080m40) has high strength levels compared to normal bright mild steel, due to the rmo-mechanical rolling. EN8 steel is appropriate for all round manufacturing applications, which require advanced strength such as manufacturing   hydraulic honed tubes , studs, bolts, linking rods, cylinder piston rods ,screws, rollers etc.It is mostly used in automobile parts and machine building industries. EN8 round steel bar can be surface hardened by  induction hardening  process, producing components with enhanced wear resistance.It is available from stock in bar and can be cut to our requirements it is also fairly strength forward to weld compared to many high alloy steel and has good machinability plus the fact that being a cold drawn grade it has better dimensional accuracy than black steel and so will tend to need less machining. Datong Group