High-tech enterprise certificate
Recognizes FeTech Spring as a technology-led manufacturer with documented R&D and industrial capability.
Expertise & Technology
Material, calculation and production review for industrial elastic components.
Section 1
Material Science
Material review for heat, corrosion, fatigue and retained-load requirements.
For material selection, compare stainless steel disc springs, heat resistant disc springs, titanium alloy disc springs, Hastelloy C-276 disc springs and nickel alloy disc springs against the temperature, corrosion and preload-retention risk of the assembly.
| Material | Standard | Max Temp | Key Characteristic |
|---|---|---|---|
| 60SiCr7 / 51CrV4 / 50CrVA | EN 1.7108 / 1.8159 / GB 50CrVA | 200 deg C / 390 deg F | High-tensile spring steels for standard DIN 2093 disc springs and general industrial load control. |
| 301 / 304 / 316 Stainless Steel | AISI 301 / 304 / 316 | 200 deg C / 390 deg F | Corrosion-resistant stainless options for humid, chemical, food equipment and outdoor assemblies. |
| 630 / 631 / 632 PH Stainless | 17-4PH / 17-7PH / 15-7Mo | 355 deg C / 670 deg F | Precipitation-hardening stainless grades for stronger spring performance with corrosion resistance. |
| SKD61 / H13 / 8407 Supreme | JIS SKD61 / AISI H13 / ESR hot-work steel | 600 deg C / 1110 deg F | Hot-work tool steels for heat-resistant disc springs, high-temperature bolting and thermal equipment. |
| Inconel X-750 | UNS N07750 / 2.4669 | 600 deg C / 1100 deg F | Age-hardened nickel alloy for high-temperature relaxation resistance and valve live loading. |
| Inconel 625 | UNS N06625 / 2.4856 | 650 deg C / 1200 deg F | Nickel-chromium-molybdenum-niobium alloy reviewed for chloride, seawater and severe chemical corrosion service. |
| Inconel 718 | UNS N07718 / 2.4668 | 650 deg C / 1200 deg F | High-strength nickel alloy for HPHT, aerospace, offshore and severe industrial spring systems. |
| Nimonic 90 | UNS N07090 / 2.4632 | 700 deg C / 1290 deg F | Ni-Cr-Co alloy selected for creep resistance and load retention at elevated temperature. |
| Hastelloy C-276 | UNS N10276 | 400 deg C / 750 deg F | Nickel-molybdenum-chromium alloy for chloride, acid, scrubber and severe chemical corrosion service. |
| TC4 / TC6 Titanium Alloy | Ti-6Al-4V / TC6 | 300 deg C / 570 deg F | Lightweight, corrosion-resistant titanium options where steel weight or magnetic behavior is unsuitable. |
| S816 Cobalt Alloy | Cobalt-base high-temperature alloy | 815 deg C / 1500 deg F | Extreme-temperature alloy option for specialized power, furnace and thermal process applications. |
Section 2
Calculation Tool
Use this preliminary disc spring calculator to screen material direction, working temperature, load range, stack logic and friction allowance before sending drawings or operating data for engineering review.
Use this preliminary check together with the DIN 2093 disc spring catalog, disc spring calculation formulas and application failure-risk guides when reviewing live loading, valve springs or custom Belleville washer stacks.
Core inputs reviewed
- Outer diameter D (mm)
- Inner diameter d (mm)
- Thickness t (mm)
- Free height H (mm)
- Working deflection f (mm)
- Target stack load and travel when available
Calculation outputs
- Preliminary disc spring load and deflection relationship
- Stress checkpoints including sigma om, sigma 1, sigma 2 and sigma 3
- Series and parallel stack direction, including suggested counts from target load and travel
- Friction allowance, average stiffness and energy estimates before a formal RFQ review
Engineering workflow
01
Screen the application, media, temperature and pressure to identify the likely material family.
02
Use the Belleville washer calculation to estimate force, deflection, stack height and stress points.
03
Send drawings, load target and operating conditions for final material, fatigue and preload-loss review.
Choose a spring calculator
Choose the spring type you need, then enter the basic parameters for a preliminary calculation.
Online results are for preliminary screening. Final selection should be checked against drawing, material condition, heat treatment, fatigue life and real installation limits.
Disc Spring Design Calculator
Enter core geometry for a fast Belleville washer calculation. The tool estimates single-disc load, stack load, travel, friction allowance, average stiffness, energy and stress checkpoints so the RFQ starts from a clearer sizing direction.
Calculated results
F-N / disc
F stack-N
h0-mm
Stack height-mm
Stack travel-mm
Loading F-N
Unloading F-N
Suggested n-pcs / set
Suggested i-sets
Average stiffness-N/mm
Energy-N mm
f / h0-%
E / mu / K4-N/mm2
sigma om-MPa
sigma 1-MPa
sigma 2-MPa
sigma 3-MPa
- The force formula follows the DIN / GB-style disc spring relationship for a single conical spring; K4 can be set from the series preset or custom geometry data and should be verified against the actual support-face and edge condition.
- Parallel discs increase force, series sets increase travel; suggested n and i are rounded-up estimates based on target load and target travel.
- Displayed stiffness is an average F / f estimate for screening, not a full tangent stiffness curve from a formal design report.
- Friction allowance, fatigue life, seating condition, temperature relaxation and final stress limits still need engineering review before production.
Wave Spring Preliminary Calculator
Use this for single-layer or multi-layer wave spring screening before FeTech reviews the drawing and working space.
Preliminary result
Estimated spring rate-N/mm
Estimated force-N
Estimated stress-MPa
Solid height-mm
Working height-mm
Deflection ratio-%
Energy-N mm
Material note--
- Multi-layer wave spring output is an equivalent preliminary estimate.
- Final design data must be checked by FeTech engineers before it is used as the final calculation basis.
Request Calculation Service
For valve, flange, actuator or high-temperature projects, send dimensions, material, load target, temperature and cycle conditions. Our engineers will return a practical disc spring or Belleville washer stack recommendation for review.
Request Calculation ServicePatents & Certifications
Documented Capability Behind Critical Spring Components
FeTech Spring holds more than 20 invention and utility model patents across disc spring structure, forming, polishing, shot peening and corrosion-resistant designs. These records support the same capabilities buyers evaluate in critical spring projects: R&D depth, process control, fatigue resistance, corrosion control and export readiness.
China customs registration
Supports export documentation, international shipment and cross-border industrial supply workflows.
Disc spring shot peening device patent
Process patent supporting fatigue improvement and controlled surface treatment for demanding disc spring service.
Stainless disc spring polishing patent
Process patent related to surface finishing of stainless disc springs for corrosion-sensitive assemblies.
Disc spring press forming device patent
Manufacturing patent supporting repeatable forming quality and geometry control in disc spring production.
Fatigue-resistant disc spring patent
Product patent aligned with customer needs for longer service life and reduced fatigue failure risk.
Corrosion-resistant stainless disc spring patent
Product patent supporting stainless disc spring applications exposed to humidity, chemicals and outdoor service.