Rebar Grade Chart 2026 – Yield Strength, ASTM Standards & Equivalents
Rebar Grade Chart
Yield Strength & Standards Guide
Complete rebar grade reference for engineers and contractors — yield strength, tensile strength, ASTM standards, international equivalents, and structural application guidance.
Reviewed by Muhammad Ramzan Babar, PhD Researcher (Plasma Physics) & Calculator Developer — View Profile
⭐ Master Rebar Grade Chart
Complete comparison of rebar grades, yield strength, tensile strength, governing standards, and typical applications.
How to Read This Chart
The grade number equals the minimum yield strength in ksi (thousands of psi). For example, Grade 60 rebar has a minimum yield strength of 60,000 psi. Once you’ve selected a grade, pair it with our Rebar Size Chart and Concrete Rebar Calculator to finalize your project quantities.
| Rebar Grade | Yield Strength | Tensile Strength | Standard | Common Uses |
|---|---|---|---|---|
| Grade 40 | 40,000 psi (280 MPa) | 60,000 psi (420 MPa) | ASTM A615 | Light residential, sidewalks |
| Grade 60 | 60,000 psi (420 MPa) | 90,000 psi (620 MPa) | ASTM A615 / A706 | General construction, most common |
| Grade 75 | 75,000 psi (520 MPa) | 100,000 psi (690 MPa) | ASTM A615 | Heavy structural, columns |
| Grade 80 | 80,000 psi (550 MPa) | 105,000 psi (725 MPa) | ASTM A706 / A615 | Seismic, weldable applications |
| Grade 100 | 100,000 psi (690 MPa) | 115,000 psi (800 MPa) | ASTM A1035 | High-rise, congestion reduction |
| Grade 120 | 120,000 psi (830 MPa) | 150,000 psi (1035 MPa) | ASTM A1035 | Specialized high-strength structures |
⭐ Rebar Grade Chart by ASTM Grade
Detailed strength values and typical applications for each standard rebar grade.
| Rebar Grade | Yield Strength | Tensile Strength | Common Uses |
|---|---|---|---|
| Grade 40 | 40 ksi | 60 ksi | Sidewalks, light slabs, small residential footings |
| Grade 60 | 60 ksi | 90 ksi | Foundations, slabs, beams, columns — most common grade |
| Grade 75 | 75 ksi | 100 ksi | Heavy columns, high-load structural members |
| Grade 80 | 80 ksi | 105 ksi | Seismic-resistant structures, bridge components |
| Grade 100 | 100 ksi | 115 ksi | High-rise buildings, congested reinforcement zones |
| Grade 120 | 120 ksi | 150 ksi | Specialized industrial and high-performance structures |
⭐ Rebar Grade by Yield Strength
Yield strength values in both Imperial and Metric units for quick cross-reference.
| Grade | Yield Strength (ksi) | Yield Strength (MPa) |
|---|---|---|
| Grade 40 | 40 | 280 |
| Grade 60 | 60 | 420 |
| Grade 75 | 75 | 520 |
| Grade 80 | 80 | 550 |
| Grade 100 | 100 | 690 |
| Grade 120 | 120 | 830 |
Rebar Grade by Tensile Strength
Minimum tensile strength, yield-to-tensile ratio, and typical elongation by grade.
| Grade | Min Tensile Strength | Yield-to-Tensile Ratio | Typical Elongation |
|---|---|---|---|
| Grade 40 | 60 ksi (420 MPa) | 0.67 | 11–12% |
| Grade 60 | 90 ksi (620 MPa) | 0.67 | 7–9% |
| Grade 75 | 100 ksi (690 MPa) | 0.75 | 6–7% |
| Grade 80 (A706) | 105 ksi (725 MPa) | Max 1.25 (controlled) | 10–14% |
| Grade 100 | 115 ksi (800 MPa) | 0.87 | 7–9% |
| Grade 120 | 150 ksi (1035 MPa) | 0.80 | 6–8% |
⭐ Rebar Grade by Construction Application
Recommended rebar grade by common project type.
| Project | Recommended Rebar Grade |
|---|---|
| Residential Foundations | Grade 60 |
| Footings | Grade 60 |
| Slabs | Grade 60 |
| Driveways | Grade 40 or Grade 60 |
| Columns | Grade 60 or Grade 75 |
| Beams | Grade 60 |
| Retaining Walls | Grade 60 |
| Bridges | Grade 60 or Grade 80 (A706) |
| High-Rise Buildings | Grade 75 or Grade 100 |
| Industrial Structures | Grade 60 to Grade 100 |
⭐ Grade 40 vs Grade 60 Rebar Comparison
The most searched rebar comparison — understanding when each grade makes sense.
| Factor | Grade 40 | Grade 60 |
|---|---|---|
| Yield Strength | 40,000 psi | 60,000 psi |
| Tensile Strength | 60,000 psi | 90,000 psi |
| Ductility | Slightly higher elongation | Good ductility, industry standard |
| Cost | Generally lower | Slightly higher, but better value per strength |
| Common Applications | Light slabs, sidewalks | Foundations, slabs, beams, columns |
| Advantages | Easier to bend, more forgiving | Higher capacity, less steel needed |
| Limitations | Requires more bars for same load | Slightly less ductile than Grade 40 |
Why Grade 60 Dominates
Grade 60 is now the de facto standard in the US because it offers 50% more strength than Grade 40 at only a marginal cost premium. Use our Rebar Weight Calculator to compare material savings between grades on your project.
Grade 60 vs Grade 75 Rebar
Comparing strength, cost, and availability for heavier structural applications.
| Factor | Grade 60 | Grade 75 |
|---|---|---|
| Strength | 60,000 psi yield | 75,000 psi yield |
| Typical Uses | General construction | Columns, heavy structural members |
| Cost | Lower, widely stocked | Higher, specialty order in some regions |
| Availability | Universally available | Limited to larger bar sizes and suppliers |
Grade 80 vs Grade 100 Rebar
Where higher-strength reinforcement is commonly specified.
| Factor | Grade 80 | Grade 100 |
|---|---|---|
| Standard | ASTM A706 / A615 | ASTM A1035 |
| Primary Use | Seismic, weldable structures | High-rise columns, congested reinforcement zones |
| Ductility Control | Tightly controlled yield-to-tensile ratio | Lower relative ductility, requires design care |
Rebar Grade by ASTM Standard
Key ASTM specifications governing rebar material type and available grades.
| Standard | Material Type | Available Grades | Typical Applications |
|---|---|---|---|
| ASTM A615 | Carbon steel, deformed/plain | 40, 60, 75, 80, 100 | General concrete reinforcement |
| ASTM A706 | Low-alloy, weldable steel | 60, 80 | Seismic and welded structures |
| ASTM A955 | Stainless steel | 60, 75 | Marine, corrosive environments |
| ASTM A1035 | Low-carbon, chromium steel | 100, 120 | High-strength, congestion reduction |
Rebar Grade by International Standards
Comparing rebar grading systems across major global standards.
| Standard | Region | Typical Grades |
|---|---|---|
| ASTM | USA | Grade 40, 60, 75, 80, 100, 120 |
| CSA G30.18 | Canada | 400W, 500W (MPa-based) |
| BS 4449 | UK | B500A, B500B, B500C |
| EN 10080 | Europe | B500A, B500B, B500C |
| IS 1786 | India | Fe415, Fe500, Fe550, Fe600 |
| AS/NZS 4671 | Australia/New Zealand | 250N, 300E, 500N, 500E |
⭐ Rebar Grade Equivalent Chart
Cross-reference US grades with metric and international equivalents for global projects.
| US Grade | Metric Grade (MPa) | International Equivalent |
|---|---|---|
| Grade 40 | 280 | Fe415 (India, approx.) |
| Grade 60 | 420 | B500B (EU), Fe500 (India), 500N (AU/NZ) |
| Grade 75 | 520 | Fe550 (India, approx.) |
| Grade 80 | 550 | 500E (AU/NZ, seismic approx.) |
| Grade 100 | 690 | No direct common equivalent (specialty) |
| Grade 120 | 830 | No direct common equivalent (specialty) |
Equivalents are approximate based on nominal yield strength; always verify with local structural codes for exact substitution requirements.
Rebar Grade by Structural Member
Grade recommendations organized by structural element type.
| Structural Member | Recommended Grade |
|---|---|
| Footings | Grade 60 |
| Slabs | Grade 60 |
| Beams | Grade 60 |
| Columns | Grade 60 or Grade 75 |
| Shear Walls | Grade 60 (A706 for seismic zones) |
| Bridge Decks | Grade 60 or Grade 80 (A706) |
| Foundations | Grade 60 |
Once you’ve chosen a grade for a specific member, confirm bar layout using our Rebar Spacing Calculator and Rebar Area Calculator.
Rebar Grade by Seismic Design
Weldable, ductile grades are essential for earthquake-resistant structures.
| Design Category | Recommended Grade | Notes |
|---|---|---|
| Standard Structures | Grade 60 (A615) | Non-seismic zones |
| Earthquake-Resistant Structures | Grade 60 (A706) | Controlled yield-to-tensile ratio, weldable |
| High-Ductility Applications | Grade 80 (A706) | Higher strength with guaranteed ductility |
Weldability Matters
ASTM A615 rebar is not guaranteed weldable due to uncontrolled carbon content — always specify ASTM A706 when welding is required, especially in seismic design. For splice detailing, check our Rebar Lap Splice Chart and Rebar Lap Length Calculator.
Rebar Grade vs Yield Strength
How increasing grade affects design capacity and reinforcement quantity needed.
| Grade | Yield Strength | Relative Design Capacity | Reinforcement Quantity Impact |
|---|---|---|---|
| Grade 40 | 40 ksi | Baseline | Requires most steel for given load |
| Grade 60 | 60 ksi | +50% | Reduces steel quantity vs Grade 40 |
| Grade 75 | 75 ksi | +87% | Further reduction in bar count/spacing |
| Grade 100 | 100 ksi | +150% | Significant reduction, eases congestion |
Rebar Grade vs Ductility
Higher-strength grades often trade some ductility for capacity.
| Grade Category | Typical Elongation | Design Consideration |
|---|---|---|
| Low Grade (40) | 11–12% | High ductility, forgiving in bending |
| Standard Grade (60) | 7–9% | Balanced strength and ductility |
| High-Strength Grade (100+) | 6–8% | Requires careful detailing for ductile behavior |
Rebar Grade vs Corrosion Resistance
Material coating and alloy choice matter as much as grade for durability.
| Rebar Type | Corrosion Resistance | Typical Use |
|---|---|---|
| Carbon Steel Rebar | Low | Standard interior/dry applications |
| Epoxy-Coated Rebar | Moderate | Bridges, parking structures, de-icing salt exposure |
| Galvanized Rebar | Moderate-High | Coastal and moderately corrosive environments |
| Stainless Steel Rebar | Very High | Marine structures, critical infrastructure |
| MMFX/High-Performance Rebar | High | Long-service-life infrastructure projects |
Corrosion resistance also depends heavily on proper concrete cover — see our Concrete Cover Chart and Rebar Cover Calculator for minimum cover requirements by exposure condition.
⭐ Rebar Grade Selection Guide
Quick decision reference matching project type to recommended grade with reasoning.
| Project | Recommended Grade | Why |
|---|---|---|
| House Foundation | Grade 60 | Standard strength, cost-effective, widely stocked |
| Residential Slab | Grade 60 | Balances strength and workability |
| Bridge | Grade 60 or 80 (A706) | Weldable, ductile for dynamic loading |
| Parking Garage | Grade 60 (epoxy-coated) | Corrosion protection from de-icing salts |
| Marine Structure | Stainless or Grade 60 galvanized | High corrosion resistance required |
| Industrial Building | Grade 60 to 75 | Handles heavier equipment loads |
| High-Rise Construction | Grade 75 or 100 | Reduces bar congestion in dense columns |
Not sure if your project even needs reinforcement? Start with our guide: Does Concrete Need Rebar? or review general strength planning in our Concrete PSI Guide.
⭐ Visual Rebar Grade Comparison
Engineering diagrams comparing relative strength across grades.
Common Rebar Grade Selection Mistakes
Avoiding these errors prevents costly design or code compliance issues.
Choosing a Higher Grade Than Required
Over-specifying strength increases cost without structural benefit and can reduce available ductility.
Confusing Size with Grade
Bar size (#4, #5, #6) refers to diameter, while grade refers to steel strength — these are independent specifications.
Ignoring Local Building Codes
Some jurisdictions mandate minimum grades or require A706 for specific seismic design categories.
Using Non-Weldable Rebar in Welded Applications
ASTM A615 does not guarantee weldability; always specify A706 when welding is planned.
Overlooking Seismic Requirements
Standard Grade 60 A615 rebar may not meet ductility requirements in high seismic zones — verify code requirements.
Assuming All Grade 60 Bars Are Identical
Grade 60 under A615 and A706 have different chemistry and ductility controls despite sharing the same yield strength.
Contractor Worked Examples
Real-world rebar grade selection scenarios for common project types. For quantity takeoffs, pair these examples with our How to Calculate Concrete guide and Rebar Installation Cost Calculator.
Residential Foundation
Bridge Deck
Frequently Asked Questions
📄 Download Rebar Grade Chart PDF
Get a print-ready engineering reference including ASTM grade comparison tables, yield/tensile strength charts, international grade equivalents, structural application guide, rebar selection flowchart, and field-ready contractor reference sheet.
