Ultra Coupler SD400 Tensile, Yield and Residual Deformation Test Report (D13-D32)_2026-10

Test Report Details

Page content updated: 2026-10-28

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) SD400 (D13-D32)
Test standard / method: KS D 0249, KS B 0802
Testing organization: Korea Construction Quality Institute Co., Ltd.
Test or issue period: 2026-10-28 (issue date)
Result summary: Yield strength, tensile strength, residual deformation and rebar fracture results were reviewed for seven sizes, D13-D32.
All sizes meet the attached JUNSUNG comparison-sheet criteria.
Results apply to the tested specimens.

Results apply to the specimens in the source reports. Confirm the product, rebar grade, diameter and project requirements before use.

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Results by Rebar Size

Ultra Coupler SD400 · Issued 2026-10-28

Measurements from the laboratory reports, grouped by rebar size. Results apply to the specimens tested.

Ultra Coupler SD400 — measured results
Size	Yield strength N/mm²	Tensile strength N/mm²	Residual deformation mm	Fracture location	Source
D13	456	573	0.14	Rebar	D13 report PDF (2 pages)
D16	453	610	0.13	Rebar	D16 report PDF (2 pages)
D19	502	643	0.10	Rebar	D19 report PDF (2 pages)
D22	445	612	0.01	Rebar	D22 report PDF (2 pages)
D25	458	588	0.02	Rebar	D25 report PDF (2 pages)
D29	455	583	0.16	Rebar	D29 report PDF (2 pages)
D32	436	568	0.05	Rebar	D32 report PDF (2 pages)