JIS Standard Chrome Silicon Oil-Tempered Wire Heavy Duty Die Spring 20% Deflection

This die spring variant is used inside injection and pressing tooling where controlled force over a defined travel is critical. In automotive connector and sensor housings, it helps maintain consistent die cushioning and ejection support as press loads fluctuate, improving cycle-to-cycle stability during molding.

It is also commonly specified for high-cycle trimming and forming stations integrated with mold tooling. The 20% deflection target supports a predictable load curve for die-set components, helping protect working surfaces when repeated compression is required.

• Injection mold die assemblies: set the spring to the required deflection band to stabilize die response.
• Precision press tooling: consistent load at travel helps reduce variance in forming outcomes.
• Process-fit needs: select no coating or coated versions depending on surface handling and contamination control requirements.

Built from Chrome Silicon oil-tempered wire, this die spring is intended for stable mechanical performance under repeated loading. Chrome Silicon compositions are selected to improve wear resistance and fatigue life compared with lower-alloy spring steels, supporting long service in mold/die environments.

The “oil-tempered” condition indicates heat processing that tempers the wire after a quench step, balancing strength and toughness so the spring can withstand cyclic deflection without brittle failure.

• Performance trade-off: higher hardness improves resistance to set and surface damage, while toughness helps prevent cracking under shock loading.
• Coating option: choose coated when additional surface protection or handling requirements apply; use no coating for applications where coating must be avoided.

Note: specific HRC values and exact steel grade equivalency are not provided in the supplied data.

Select the spring dimensions so its compressed travel aligns with your die-set deflection requirement (here, the spring targets 20% deflection). Use the required outer diameter D to fit within your guide/post envelope, and match the length L to your die stack-up clearance.

• Outer Diameter (D): choose within 6 ~ 70 mm to maintain proper lateral fit and avoid interference with surrounding components.
• Length (L): choose within 10 ~ 350 mm to ensure the spring seats correctly and has enough working space across cycles.

Compare the selected D and L against your core/cavity or die housing constraints, then validate that the spring’s working range produces the intended load at the 20% deflection point. If your design includes precise stack-up tolerances, leave clearance for manufacturing variation in die components and assembly height so the spring can compress without binding.

Configurable aspect: the spring is available as coating removal variants (No coating or Coated), which does not change the dimensional ranges but can affect fit in tight clearances.