R513 Reinforcing Steel Mesh — 10 mm Wire, 5.13 cm²/m
R513 mesh is the heaviest standard R-type welded fabric — 10 mm longitudinal wires at 150 mm pitch, 5.13 cm²/m cross-sectional area, supplied in standard ~6.0 × 2.3 m sheets to DIN 488-4 and EN 10080 for demanding structural applications worldwide.
R513 Mesh: Technical Specification
R513 is the highest-specification grade in the standard R-series of structural welded mesh, produced to DIN 488-4 and EN 10080. Its 10 mm longitudinal wires at 150 mm pitch deliver 5.13 cm²/m — a reinforcement area that satisfies even the most demanding structural slab and infrastructure element designs under EN 1992-1-1 (Eurocode 2) without requiring supplementary loose bars in many applications.
A 10 mm reinforcing bar weighs 0.617 kg/m (10² × 0.00617 = 0.617 kg/m) and provides 78.5 mm² cross-section — the same well-known figure at the top of the standard DIN 488 bar table. At 150 mm pitch across a 2.3 m wide sheet, approximately 15–16 longitudinal wires yield a total longitudinal steel area of approximately 1,178–1,256 mm² per metre width, confirming the 5.13 cm²/m designation. This makes R513 suitable for structural situations previously requiring either heavier bar reinforcement or a double mesh layer.
Key Dimensional Data
| Parameter | Value |
|---|---|
| Designation | R513 (structural, single-direction) |
| Longitudinal wire diameter | ~10 mm |
| Longitudinal pitch | 150 mm |
| Cross-sectional area | ~5.13 cm²/m |
| Standard sheet size | ~6.0 × 2.3 m (typical) |
| Steel grade | B500A / B500B |
| Wire weight | 0.617 kg/m (10 mm bar) |
| Governing standard | DIN 488-4 / EN 10080 |
R513 in the Context of the Full R-Series
R513 occupies the top of the standard R-series. Selecting the right grade depends on the calculated reinforcement requirement from the structural design.
R-Series Comparison
| Grade | Wire mm | cm²/m |
|---|---|---|
| R188 | 6 | 1.88 |
| R257 | 7 | 2.57 |
| R335 | 8 | 3.35 |
| R424 | 9 | 4.24 |
| R513 | 10 | 5.13 |
Material Grade
B500A (normal ductility: k ≥ 1.05, Agt ≥ 2.5%) is the standard supply grade. B500B (high ductility: k ≥ 1.08, Agt ≥ 5.0%) is available for seismic and high-ductility specifications. Both deliver 500 MPa minimum characteristic yield.
Weld Integrity
All welded intersections comply with DIN 488-4 shear force requirements. The welding process follows DIN EN ISO 17660 principles, ensuring the mechanical properties of the wire are not compromised at the weld point.
Typical Applications for R513 Mesh
R513 is specified for the most structurally demanding applications where high reinforcement ratios are required and the practicality of a single mesh layer is valued over combining lighter mesh with supplementary bars:
- Heavily loaded suspended slabs and transfer plates — multi-storey buildings with high imposed loads (≥ 7.5 kN/m²), parking structures, and transfer plates supporting columns where the Eurocode 2 design calculation demands steel areas above 4.5 cm²/m.
- Major infrastructure: bridge decks and viaducts — reinforced concrete bridge deck slabs where fatigue loading, wide crack-width control, and high permanent loads govern the reinforcement specification.
- Airport and port pavements — concrete airfield pavements, aprons, and container terminal hardstandings subject to heavy wheel loads requiring crack control under repeated loading.
- Tunnel lining segments and culverts — precast segmental tunnel lining, box culverts, and other civil infrastructure elements with heavy structural demands.
- Raft foundations and thick ground slabs — heavily loaded industrial raft foundations where the foundation slab design requires elevated reinforcement ratios in both upper and lower mats.
- Retaining wall stems under high earth pressure — cantilever retaining walls with significant retained height, where the wall stem reinforcement demand at the base exceeds lighter mesh grades.
Where two-directional reinforcement is equally required — such as in flat plate construction or two-way spanning bridge decks — Q-series mesh (Q-type, bidirectional) may be more appropriate. We supply a full programme of both R and Q grades.
Browse all mesh grades →Export Packaging & Documentation
R513 mesh is prepared for international shipment with full export compliance documentation.
Heavy-Gauge Seaworthy Packing
At approximately 50–60 kg per standard sheet, R513 packs are engineered for safe crane and fork-lift handling. Bundles of approximately 2 tonnes are securely banded and protected for container or break-bulk ocean freight to any port worldwide.
Full Document Package
Mill Test Certificate (EN 10204 3.1), Certificate of Origin, CE Declaration of Performance (DoP), packing list, and commercial invoice. Third-party inspection (SGS, Bureau Veritas, or equivalent) and legalisation available on request. See Export & Delivery for full details.
Compare R513 with Related Mesh Grades
R424 — 9 mm / 4.24 cm²/m
One step below R513. Suitable for heavily loaded slabs and infrastructure where the design demand falls between 3.5–4.5 cm²/m.
View R424 →B500B Loose Bars (10–40 mm)
For applications requiring even higher reinforcement areas, or where bar spacing and lap lengths must be individually specified, loose bar supply (8–40 mm) is available alongside mesh.
Steel Rebar B500B →Full Mesh Range
Explore the complete R- and Q-series welded fabric programme, including bespoke panels for project-specific specifications and non-standard pitches.
All Mesh Products →Frequently Asked Questions — R513 Mesh
How is the 5.13 cm²/m area of R513 calculated?
What is the approximate sheet weight for R513 mesh?
Is R513 suitable for use in place of two layers of R335 mesh?
Can R513 be supplied in B500B grade for seismic applications?
What minimum order quantity applies for R513 mesh export?
Source German-standard rebar with full export documentation
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