Ultra Coupler SD500 Tensile, Yield and Residual Deformation Test Report (D13-D32)_2026-07
Test Report Details
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Document details and measured results are available in HTML. Original documents are provided as images below. PDF attachments can be downloaded at the bottom of this page.
- Product
- Ultra Coupler (Field-Assembled Rebar Coupler) SD500 (D13-D32)
- Test standard / method
- KS D 0249, KS B 0802
- Testing organization
- Korea Construction Quality Institute Co., Ltd.
- Test or issue period
- 2026-07-10 (issue date)
- Result summary
- Tensile strength, residual deformation and mechanical-splice yield strength results for D13, D16, D19, D22, D25, D29 and D32 are all recorded as passing.
Results apply to the specimens in the source reports. Confirm the product, rebar grade, diameter and project requirements before use.
Results by Rebar Size
Ultra Coupler SD500 · Issued 2026-07-10
Measurements from the laboratory reports, grouped by rebar size. Results apply to the specimens tested.
| Size | Yield strength N/mm² |
Tensile strength N/mm² |
Residual deformation mm |
Fracture location |
Source |
|---|---|---|---|---|---|
| D13 | 603 | 722 | 0.12 | Rebar | D13 report |
| D16 | 552 | 667 | 0.07 | Rebar | D16 report |
| D19 | 532 | 661 | 0.16 | Rebar | D19 report |
| D22 | 575 | 688 | 0.04 | Rebar | D22 report |
| D25 | 532 | 653 | 0.17 | Rebar | D25 report |
| D29 | 535 | 742 | 0.10 | Rebar | D29 report |
| D32 | 567 | 701 | 0.18 | Rebar | D32 report |
Swipe the table to see all columns on mobile.
Acceptance Criteria
JUNSUNG comparison-sheet criteria: yield strength 500–650 N/mm²; tensile strength ≥ 625 N/mm²; residual deformation ≤ 0.3 mm; rebar fracture.
JUNSUNG comparison sheet is the source of these criteria; this summary does not replace the full applicable standard.
Source: Korea Construction Quality Institute Co., Ltd. · KS D 0249, KS B 0802
준성산업 울트라 커플러(현장체결식 철근커플러) 품질검사 성적서입니다.
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