AISI 1044 Steel, merchant quality, hot rolled

AISI 1044 Steel, merchant quality, hot rolled, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: AISI 1044 Steel, merchant quality, hot rolled, 19-32 mm (0.75-1.25 in) round Synonyms -:- For detailed product information, please contact sales. -:

AISI 1044 Steel, merchant quality, hot rolled, 19-32 mm (0.75-1.25 in) round Product Information -:- For detailed product information, please contact sales. -: ### **Technical Data Sheet: AISI 1044 Merchant Quality Hot Rolled Steel Round Bar (19-32 mm / 0.75-1.25 in)** --- #### **1. Product Overview** AISI 1044 Merchant Quality (MQ) Hot Rolled Round Bar is a commercially available medium-carbon steel supplied in standard sizes with typical mill tolerances. The "Merchant Quality" designation indicates material produced for general commercial distribution rather than specific engineered applications, offering an economical balance of strength and workability. This product features the characteristic hot-rolled surface with mill scale and is supplied in the as-rolled condition without special heat treatment or testing requirements beyond basic chemistry verification. The 19-32 mm (0.75-1.25 in) diameter range represents common stock sizes for general fabrication, repair, and non-critical component manufacturing. --- #### **2. Key Characteristics** - **Cost-Effective**: Most economical form of AISI 1044 steel - **Readily Available**: Standard stock item in steel service centers - **Adequate Strength**: Suitable for general structural and mechanical applications - **Good Formability**: Can be hot-worked, bent, and machined with standard equipment - **Standard Tolerances**: Commercial grade dimensional tolerances - **Minimal Testing**: Typically supplied without extensive mechanical testing certification --- #### **3. Chemical Composition (Typical Merchant Quality)** | Element | Composition Range (%) | Notes | |---------|----------------------|-------| | **Carbon (C)** | 0.43 - 0.50 | Primary strengthening element | | **Manganese (Mn)** | 0.60 - 0.90 | Standard range for merchant products | | **Phosphorus (P)** | ≤ 0.040 | Standard commercial limit | | **Sulfur (S)** | ≤ 0.050 | Standard commercial limit | | **Silicon (Si)** | 0.15 - 0.35 | Typical deoxidizer content | | **Iron (Fe)** | Balance | Base metal | *Note: Merchant quality material may have slightly broader compositional variations than fully certified material.* --- #### **4. Typical Mechanical Properties (As-Rolled, Merchant Quality)** | Property | Typical Range | Notes | |----------|-------------|-------| | **Tensile Strength** | 580 - 710 MPa (84 - 103 ksi) | May vary by rolling conditions | | **Yield Strength (0.2% offset)** | 380 - 510 MPa (55 - 74 ksi) | Typical commercial minimum | | **Elongation in 50 mm (2")** | 14% - 19% | Minimum typically 12% | | **Brinell Hardness** | 167 - 229 HB | As-rolled condition | | **Surface Condition** | Mill scale covered | Blue/black oxide surface | *Merchant Quality material is typically sold without guaranteed mechanical properties. Values shown are typical but not certified.* --- #### **5. Dimensional Tolerances (Merchant Quality)** | Dimension | Tolerance | Standard Reference | |-----------|-----------|-------------------| | **Diameter (19-32 mm)** | ±0.4 mm (±0.016 in) | Commercial tolerance | | **Out-of-Round** | ≤ 75% of diameter tolerance | Typical commercial practice | | **Length** | +25 mm / -0 mm (+1 in / -0 in) | Standard mill practice | | **Straightness** | 1.5 mm per meter (0.018 in per ft) | Commercial grade | *Note: Tolerances are broader than for fully certified material.* --- #### **6. International Standard References** | Standard System | Designation | Applicability | |----------------|-------------|---------------| | **SAE/AISI** | 1044 | Chemical composition basis | | **ASTM** | A29 (General) | Hot-rolled steel bars reference | | **Commercial** | "Merchant Quality" | Industry designation for commercial stock | | **EN** | 1.1193 (C44E) | European approximate equivalent | | **ISO** | C44E | International approximate equivalent | *Merchant Quality material typically conforms to commercial industry standards rather than specific engineered material specifications.* --- #### **7. Common Applications** **General Fabrication & Repair:** - Replacement shafts and axles - Bracket and frame construction - Repair parts for agricultural equipment - General hardware manufacturing **Construction & Building:** - Structural supports and bracing - Anchor bolts and foundation hardware - Temporary construction components - Fence posts and gate hardware **Agricultural & Industrial:** - Implement repair parts - Conveyor system components - Material handling equipment - Non-critical machinery parts **DIY & Workshop:** - Hobby and project materials - Tool making and jig construction - Workshop fixtures and stands - General repair stock **Educational & Prototyping:** - Vocational training materials - Engineering student projects - Prototype development - Demonstration components --- #### **8. Fabrication Guidelines** **Cutting & Machining:** - Easily cut with band saws, abrasive saws, or torches - Machine with standard HSS or carbide tools - Remove mill scale before precision machining - Use cutting fluids for better tool life **Welding:** - Pre-heating (150-200°C / 300-400°F) recommended - Basic electrodes (E6013, E7014) acceptable for non-critical welds - Post-weld heat treatment optional for stress relief - Not recommended for highly stressed welded structures **Forming & Bending:** - Hot bending recommended for tight radii - Minimum cold bend radius: 3 × diameter - Forge at 1150-1200°C (2100-2200°F) - Anneal if extensive cold working required **Surface Preparation:** - Remove mill scale by sandblasting, grinding, or pickling - Suitable for painting after proper cleaning - Can be plated with standard processes --- #### **9. Quality Considerations** **Typical Merchant Quality Characteristics:** - Chemical composition within broad commercial ranges - Visual surface inspection only - May contain minor surface imperfections - No guaranteed mechanical properties - Batch testing rather than piece-by-piece certification **Purchasing Considerations:** - Specify "Merchant Quality" or "Commercial Quality" - Verify suitability for intended application - Consider upgrading to certified material for critical uses - Request material test report if available - Inspect upon receipt for visible defects --- #### **10. Storage & Handling** - Store in dry conditions to minimize corrosion - Stack with adequate support to prevent bending - Separate by size and grade for easy identification - Rotate stock using FIFO system - Basic weather protection sufficient for short-term storage --- #### **11. Comparison with Fully Certified Material** | Aspect | Merchant Quality | Fully Certified (ASTM A576) | |--------|------------------|----------------------------| | **Chemistry Control** | Broad ranges | Tight control | | **Mechanical Testing** | None required | Full testing required | | **Tolerances** | Commercial grade | Engineering tolerances | | **Price** | Lower | Higher | | **Traceability** | Limited | Full heat traceability | | **Application** | Non-critical | Engineered applications | --- #### **12. Ordering Information** **Typical Order Description:** "Hot Rolled Round Bar, AISI 1044, Merchant Quality" "Diameter: 25 mm (1 in), Random Lengths" "Quantity: 500 kg, As-rolled condition" "No certification required" **Available Forms:** - Random mill lengths (typically 6-12 meters) - Cut-to-length available (additional charge) - Standard black (as-rolled) finish - No additional processing unless specified --- **Important Notes for Users:** 1. **Application Suitability**: Verify merchant quality material is appropriate for intended use 2. **No Guarantees**: Mechanical properties are not certified or guaranteed 3. **Visual Inspection**: Recommended upon receipt for obvious defects 4. **Testing**: Consider independent testing if properties are critical 5. **Safety Factor**: Use higher safety factors in design calculations 6. **Upgrade Option**: Specify certified material (ASTM A576) for engineered applications --- **Disclaimer**: Merchant Quality material is supplied for general commercial use without certification or guarantees of mechanical properties. This product is not recommended for safety-critical applications, pressure vessels, structural framing where life safety is involved, or any application requiring certified material properties. Users must determine suitability for their specific application. Always follow appropriate safety practices when handling, cutting, or fabricating steel products. -:- For detailed product information, please contact sales. -: AISI 1044 Steel, merchant quality, hot rolled, 19-32 mm (0.75-1.25 in) round Specification Dimensions Size： Diameter 20-1000 mm Length <4809 mm Size:We can customized as required Standard： Per your request or drawing We can customized as required Properties（Theoretical） Chemical Composition -:- For detailed product information, please contact sales. -: AISI 1044 Steel, merchant quality, hot rolled, 19-32 mm (0.75-1.25 in) round Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1044 Steel, merchant quality, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1044 Steel, merchant quality, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -:

Packing of AISI 1044 Steel, merchant quality, hot rolled, 19-32 mm (0.75-1.25 in) round -:- For detailed product information, please contact sales. -: Standard Packing: -:- For detailed product information, please contact sales. -: Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 1280 gallon liquid totes Special package is available on request. E FORUs’ is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition