Innovative technology of pre-materials suitable for gas springs
welded and drawn according to ASTM A213
various ID tolerance requirement of H8, H9, H10 and H11
surface roughness below 15RA (0.40 �¼m)
mechanical properties are controlled to endure excessive stress
hardness, tensile strength, yield strength and elongation
servicing high precision pneumatic cylinder applications
65Mn CK67 high carbon cold rolled spring steel strip
Hardened and Tempered Steel Strip
Hardened and Tempered is a thermal process that strengthens steel strips through a controlled heating and cooling process. The hardening process involves heating the steel strip to above the rapidly cooling. The steel strip in this condition is extremely brittle and requires further treatment in the tempering. Then strips are reheated to a lower temperature and holding it at the given temperature for a given period of time. This process is done in an inert atmosphere to avoid oxidation. This type of steel strip has big degree of toughness and has excellent spring properties
Material Grade
CK50,CK67,CK75, CK95,51CrV4,75Cr1 ,SK5, SAE1070,SAE1074,C67S ,C75S etc.
Condition
hardened and tempered, cold rolled annealed
Hardness
18-55HRC
Surface
polish-blue,gery-blue,polished bright golden etc.
Thickness
0.08-3 mm
Width
3-1500 mm
Tolerance
thickness+/-0.01mm max,width +/-0.05mm max
Tensile strength
540-1575N/mm2
