Beryllium Copper (QBe2) Extension Springs Reference Data: 15 catalog-backed reference configurations are available for sizing review. Use the ranges below to compare the starting envelope before submitting a drawing for final quotation.
- Wire diameter
- 0.15-5 mm (0.0059-0.1969 in)
- Outside diameter
- 2.06-42.48 mm (0.0811-1.6724 in)
- Inside diameter
- 1.76-34.48 mm (0.0693-1.3575 in)
- Free length
- 6.67-250.16 mm (0.2626-9.8488 in)
- Spring rate
- 0.014-40.539 N/mm
- Maximum load
- 0.04-1074.41 N
Catalog rows are reference configurations for custom design review. Final dimensions, loads, tolerances and material certifications are confirmed during quotation.
Products Represented in This Data
These rows show which product designs are represented in the reference data. Open the matching product for geometry, quotation inputs, application guidance and RFQ details.
- English-Hook Extension Springs2 matching rowsEnglish-Hook Extension Springs Application Guide
- German-Hook Extension Springs6 matching rowsGerman-Hook Extension Springs Application Guide
- Offset-Hook Extension Springs3 matching rowsOffset-Hook Extension Springs Application Guide
- Round-Hook Extension Springs4 matching rowsRound-Hook Extension Springs Application Guide
Related Spring Design Guides
Use these guides to define the working dimensions, loads and quotation requirements.
Engineering Material Reference
Beryllium Copper (QBe2) extension springs reference data combines the published material properties with matching rows from the Spring Finder catalog. Use the product links in the table for product-specific design and quotation details.
| Primary grade | UNS C17200 |
|---|---|
| Standards | ASTM B197 wire; ASTM B194 strip; ASTM B196 bar; UNS C17200 |
| Corrosion behavior | good atmospheric corrosion resistance with useful electrical conductivity for contact and grounding springs |
| Temperature note | screening range -200 to 200 C, to be confirmed against final stress and environment |
| Tensile strength | 1100-1380 MPa |
| Elastic modulus | 131 GPa |
| Shear modulus | 50 GPa |
| Density | 8.36 g/cm3 |
Matching Reference Configurations
| Model | Product | Wire / thickness | OD | ID | Free length | Rate (N/mm) | Material | Max load (N) |
|---|---|---|---|---|---|---|---|---|
| SE-015-0021-0067-0563 | Offset-Hook Extension Springs | 0.15 mm | 2.06 mm | 1.76 mm | 6.67 mm | 0.014 | Beryllium Copper (QBe2) | 0.04 |
| SE-030-0032-0180-0529 | German-Hook Extension Springs | 0.3 mm | 3.15 mm | 2.55 mm | 17.96 mm | 0.042 | Beryllium Copper (QBe2) | 0.22 |
| SE-040-0026-0156-0458 | Round-Hook Extension Springs | 0.4 mm | 2.59 mm | 1.79 mm | 15.6 mm | 0.548 | Beryllium Copper (QBe2) | 3.3 |
| SE-050-0064-0162-0442 | German-Hook Extension Springs | 0.5 mm | 6.39 mm | 5.39 mm | 16.19 mm | 0.087 | Beryllium Copper (QBe2) | 0.36 |
| SE-060-0075-0211-0505 | Round-Hook Extension Springs | 0.6 mm | 7.53 mm | 6.33 mm | 21.14 mm | 0.102 | Beryllium Copper (QBe2) | 0.57 |
| SE-100-0112-0246-0515 | Offset-Hook Extension Springs | 1 mm | 11.2 mm | 9.2 mm | 24.65 mm | 0.367 | Beryllium Copper (QBe2) | 2.39 |
| SE-200-0165-1049-0471 | Round-Hook Extension Springs | 2 mm | 16.51 mm | 12.51 mm | 104.91 mm | 0.823 | Beryllium Copper (QBe2) | 18.79 |
| SE-250-0189-1072-0456 | Round-Hook Extension Springs | 2.5 mm | 18.89 mm | 13.89 mm | 107.15 mm | 1.712 | Beryllium Copper (QBe2) | 47.55 |
| SE-250-0290-0392-0557 | German-Hook Extension Springs | 2.5 mm | 29.03 mm | 24.03 mm | 39.17 mm | 1.902 | Beryllium Copper (QBe2) | 10.45 |
| SE-250-0297-0904-0450 | Offset-Hook Extension Springs | 2.5 mm | 29.74 mm | 24.74 mm | 90.41 mm | 0.443 | Beryllium Copper (QBe2) | 10.45 |
| SE-300-0235-0473-0575 | German-Hook Extension Springs | 3 mm | 23.51 mm | 17.51 mm | 47.3 mm | 10.431 | Beryllium Copper (QBe2) | 56.02 |
| SE-400-0402-1462-0504 | German-Hook Extension Springs | 4 mm | 40.22 mm | 32.22 mm | 146.23 mm | 1.303 | Beryllium Copper (QBe2) | 26.38 |
| SE-400-0425-0793-0484 | English-Hook Extension Springs | 4 mm | 42.48 mm | 34.48 mm | 79.28 mm | 2.567 | Beryllium Copper (QBe2) | 37.18 |
| SE-500-0231-1164-0451 | English-Hook Extension Springs | 5 mm | 23.1 mm | 13.1 mm | 116.36 mm | 40.539 | Beryllium Copper (QBe2) | 1074.41 |
| SE-500-0379-2502-0487 | German-Hook Extension Springs | 5 mm | 37.86 mm | 27.86 mm | 250.16 mm | 2.572 | Beryllium Copper (QBe2) | 143.9 |
Using This Material Data
forming, age hardening or stress relief may be required; plating is often selected for contact resistance and solderability
Need to choose between grades? Material selection belongs in the Materials section rather than this data page. Open Copper Alloy Spring Materials →
CustomSprings Engineering Catalog
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Send your dimensions, quantity and drawing for engineering review.
Frequently Asked Questions
Can CustomSprings manufacture springs in Beryllium Copper (QBe2)?
The material is included in the CustomSprings material library for RFQ screening. Final feasibility depends on wire or strip form, size, heat treatment, load, environment and quantity.
Does the material page guarantee certified properties?
No. The material values are engineering reference data. Certified properties or test reports must be specified during production quotation.
What if there are no matching reference rows?
Use the RFQ form with your drawing and application data. The material can still be reviewed as a made-to-drawing option.