AISI 1019 Steel Seamless tube

AISI 1019 Steel Seamless tube, cold drawn Product Information -:- For detailed product information, please contact sales. -: AISI 1019 Steel Seamless tube, cold drawn Synonyms -:- For detailed product information, please contact sales. -:

AISI 1019 Steel, cold drawn Product Information -:- For detailed product information, please contact sales. -: # **Product Specification: AISI 1019 Low Carbon Steel, Cold-Drawn Bar** ## **Product Identification** * **Standard Designation:** AISI 1019 / SAE 1019 * **UNS Number:** G10190 * **Condition:** Cold-Drawn (Bright Drawn) * **Common Forms:** Round, Hexagonal, Square Bar; Wire * **Key Feature:** Intermediate carbon grade with balanced properties for enhanced strength and machinability ## **Overview** AISI 1019 cold-drawn steel represents a strategic intermediate grade in the low-carbon steel family, positioned between the widely used 1018 and 1020 grades. With a carbon content of 0.15-0.20% and manganese range of 0.70-1.00%, this material offers a unique combination of enhanced hardenability, good strength, and excellent cold work response. The cold-drawing process imparts a smooth, bright surface finish, tight dimensional tolerances, and significantly improved mechanical properties through strain hardening. This product is particularly valued for applications requiring better performance than standard 1018 without transitioning to higher-carbon or alloyed steels. --- ## **1. Chemical Composition (Weight %, AISI/SAE Standard)** | Element | Content (%) | Metallurgical Significance | |---------|-------------|----------------------------| | **Carbon (C)** | 0.15 - 0.20 | Balanced for strength and machinability | | **Manganese (Mn)** | **0.70 - 1.00** | **Primary differentiator** - enhances hardenability and work hardening | | **Phosphorus (P)** | ≤ 0.040 | Impurity control | | **Sulfur (S)** | ≤ 0.050 | Impurity level, can aid machinability | | **Silicon (Si)** | Typically 0.15-0.35 | Deoxidizer | | **Iron (Fe)** | Balance | Matrix element | **Grade Positioning Analysis:** - **vs. 1018:** Higher manganese (0.70-1.00% vs. 0.60-0.90%) for improved hardenability - **vs. 1020:** Slightly lower carbon but higher manganese for balanced properties - **Optimal Range:** Particularly effective in cold-drawn condition due to Mn enhancement --- ## **2. Physical & Mechanical Properties** ### **A. Physical Properties (Cold-Drawn Condition)** - **Density:** 7.87 g/cm³ (0.284 lb/in³) - **Elastic Modulus:** 200-205 GPa (29,000-29,700 ksi) - **Poisson's Ratio:** 0.29 - **Thermal Conductivity:** ~57.5 W/m·K - **Electrical Resistivity:** ~11.4 μΩ·cm - **Magnetic Properties:** Strongly ferromagnetic - **Coefficient of Thermal Expansion:** 11.7 × 10⁻⁶ /K (20-100°C) ### **B. Mechanical Properties (Typical, Cold-Drawn)** | Property | Value Range | Comparison Notes | |----------|-------------|------------------| | **Yield Strength (0.2% offset)** | 500 - 720 MPa (73 - 104 ksi) | **5-8% higher than 1018** due to Mn | | **Tensile Strength** | 590 - 820 MPa (86 - 119 ksi) | Enhanced strain hardening response | | **Elongation (50 mm)** | 10% - 17% | Maintains good ductility | | **Hardness (Brinell)** | 170 - 240 HB | Surface typically harder | | **Surface Finish (Ra)** | 0.8 - 3.2 μm (32 - 125 μin) | Excellent bright finish | | **Machinability Rating** | 75% of 1212 steel | Comparable to 1018/1020 | ### **C. Cold-Drawing Specific Effects** 1. **Enhanced Work Hardening:** Higher Mn improves strain hardening rate 2. **Dimensional Accuracy:** ASTM A29 Cold-Drawn tolerances (±0.13 mm typical) 3. **Surface Quality:** Scale-free, bright finish ideal for plating 4. **Anisotropic Properties:** Pronounced directional properties 5. **Residual Stress:** Moderate, may require stress relief --- ## **3. Product Applications** ### **High-Strength Fasteners & Components** - **Grade 8.8-10.9 Fasteners:** Bolts, studs, special fasteners - **Cold-Heading Applications:** Wire for formed components requiring strength - **Automotive Fasteners:** Engine, suspension, and chassis components ### **Precision Machined Parts** - **Screw Machine Products:** Bushings, spacers, fittings requiring strength - **Hydraulic Components:** Valve bodies, fittings, adapters - **Tooling Components:** Jigs, fixtures requiring good machinability ### **Automotive & Transportation** - **Suspension Components:** Linkage parts, brackets - **Steering Components:** Non-critical steering parts - **Drivetrain Parts:** Secondary transmission components ### **General Manufacturing** - **Shafts & Pins:** Medium-duty applications - **Agricultural Components:** Implement parts requiring strength - **Consumer Products:** Appliance components, hardware ### **Special Applications** - **Case Hardening Preforms:** Excellent for carburized parts - **Cold Forging Stock:** Good response to cold forming - **Electrical Components:** Where strength and conductivity needed --- ## **4. International Standards & Equivalents** ### **Direct Chemical Equivalents** | Standard System | Designation | C (%) | Mn (%) | Notes | |-----------------|-------------|-------|--------|-------| | **AISI/SAE** | **1019** | 0.15-0.20 | 0.70-1.00 | Primary standard | | **UNS** | **G10190** | 0.15-0.20 | 0.70-1.00 | Unified numbering | | **DIN/EN** | **1.0460** (C19E) | 0.16-0.22 | 0.70-1.00 | EN 10083-2 | | **JIS** | **S19C** | 0.15-0.20 | 0.60-0.90 | JIS G4051 (similar) | | **GB** | **19** | 0.16-0.22 | 0.70-1.00 | GB/T 699 | | **ISO** | **C19E4** | 0.16-0.22 | 0.70-1.00 | ISO 683-1 | ### **Functional Comparison Table** | Grade | C Range | Mn Range | Key Advantage | |-------|---------|----------|---------------| | **1018** | 0.15-0.20 | 0.60-0.90 | Standard balance | | **1019** | 0.15-0.20 | 0.70-1.00 | Enhanced hardenability | | **1020** | 0.18-0.23 | 0.30-0.60 | Higher carbon | | **1021** | 0.18-0.23 | 0.60-0.90 | Similar to 1019 | --- ## **5. Processing Characteristics** ### **Cold-Drawing Specifications** - **Tolerance Class:** ASTM A29 Cold-Drawn standard - **Surface Condition:** Bright, minimal imperfections - **Decarburization:** Typically <0.15 mm - **Straightness:** Commercial or special available - **Size Range:** Commonly 5-50 mm diameter ### **Machining Performance** 1. **Chip Formation:** Good breaking characteristics 2. **Tool Requirements:** Standard HSS or carbide tools 3. **Cutting Parameters:** - Speed: 90-140 m/min (carbide), 25-40 m/min (HSS) - Feed: 0.15-0.30 mm/rev - Depth: Up to 5 mm 4. **Surface Finish:** Can achieve 0.4-1.6 μm Ra ### **Heat Treatment Response** - **Annealing:** 790-845°C (1450-1550°F) for softening - **Normalizing:** 870-925°C (1600-1700°F) - **Carburizing:** Excellent - case hardness 58-63 HRC achievable - **Through-Hardening:** Moderate - limited by low carbon content - **Stress Relieving:** 315-455°C (600-850°F) for 1-2 hours ### **Forming & Fabrication** - **Cold Bending:** Good with proper radius (min. 2× thickness) - **Welding:** Excellent - similar to other low-carbon steels - **Grinding:** Responds well to precision operations - **Plating:** Excellent substrate for various finishes --- ## **6. Quality Assurance & Testing** ### **Standard Testing Requirements** | Test | Standard | Frequency | Typical Values | |------|----------|-----------|----------------| | **Chemical Analysis** | ASTM A751 | Per heat | Within specified ranges | | **Tensile Testing** | ASTM A370 | Per lot | Min. 590 MPa tensile | | **Hardness Testing** | ASTM E18 | Sample | 170-240 HB | | **Surface Inspection** | Visual | 100% | Bright, defect-free | | **Dimensional Check** | ASTM A29 | Sample | Full compliance | | **Straightness** | Standard | Sample | <0.5 mm/m | ### **Certification Levels** - **Certificate 2.2:** Statement of compliance - **Certificate 3.1:** Independent inspection - **Full Traceability:** Heat number to final product - **Special Testing:** Available upon request --- ## **7. Technical Comparison & Advantages** ### **Advantages vs. AISI 1018** | Parameter | 1019 Advantage | Magnitude | |-----------|----------------|-----------| | **Hardenability** | Higher due to Mn | 10-15% improvement | | **Yield Strength** | Slightly higher | 5-8% increase | | **Work Hardening** | Better response | Noticeable in cold work | | **Through-Hardening** | Improved | Better for larger sections | ### **Advantages vs. AISI 1020** | Parameter | 1019 Advantage | Notes | |-----------|----------------|-------| | **Weldability** | Similar to better | Lower CE possible | | **Cold Formability** | Better | Higher Mn aids forming | | **Machinability** | Comparable | Similar rating | | **Cost** | Often lower | Less carbon content | ### **Unique Benefits of 1019** 1. **Balanced Chemistry:** Optimal for many applications 2. **Availability:** Widely produced and stocked 3. **Processing Flexibility:** Good for multiple operations 4. **Cost Performance:** Excellent value proposition --- ## **8. Economic Considerations** ### **Cost Factors** | Factor | Impact Level | Typical Range | |--------|--------------|---------------| | **Material Base Cost** | High | 80-90% of total | | **Processing Premium** | Moderate | 10-15% over hot-rolled | | **Testing/Certification** | Low | 2-5% additional | | **Quantity Discounts** | Significant | 5-20% for volume | ### **Supply Chain Availability** - **Lead Times:** 4-8 weeks standard - **Minimum Orders:** 500-1000 kg typically - **Stock Programs:** Available for common sizes - **Global Sources:** Multiple manufacturers worldwide ### **Total Cost Analysis** 1. **Material Efficiency:** Cold-drawn reduces machining 2. **Processing Costs:** Lower than heat-treated alternatives 3. **Tooling Costs:** Standard tooling sufficient 4. **Scrap Rates:** Predictable with consistent material --- ## **9. Design Guidelines** ### **Optimal Applications** - **Strength Range:** 590-820 MPa tensile strength - **Hardness Requirements:** 170-240 HB typical - **Size Range:** 5-50 mm diameter optimal - **Surface Finish:** Where bright finish beneficial ### **Design Considerations** 1. **Anisotropy:** Account for directional properties 2. **Stress Relief:** Consider for precision parts 3. **Surface Treatment:** Excellent for plating/coating 4. **Weld Joints:** Design for low-carbon steel welding ### **Limitations** - **Maximum Hardness:** Limited by carbon content - **Temperature Service:** <400°C continuous - **Corrosion Resistance:** Standard carbon steel level - **Fatigue Limits:** Moderate compared to alloys --- ## **10. Packaging & Handling** ### **Standard Packaging** - **Bundle Sizes:** 500-2000 kg bundles - **Protection:** Plastic wrap, end caps - **Identification:** Tags, color coding - **Documentation:** Mill certificates included ### **Special Requirements** - **VCI Packaging:** For extended storage - **Individual Wrapping:** Critical surfaces - **Custom Cutting:** Precision cut lengths - **Barcoding:** For automated handling ### **Storage Recommendations** - **Conditions:** Dry, covered storage - **Stacking:** Limit height to prevent bending - **Handling:** Use non-marring equipment - **Shelf Life:** Essentially unlimited if protected --- ## **Summary** **AISI 1019 cold-drawn steel represents a strategically optimized material choice that delivers enhanced performance through careful chemistry balancing.** With its higher manganese content (0.70-1.00%) compared to standard 1018, this grade offers tangible improvements in hardenability, work hardening response, and mechanical properties while maintaining the excellent manufacturability characteristics of the 10xx series. **Key Value Propositions:** 1. **Enhanced Performance:** 5-8% higher strength than 1018 in cold-drawn condition 2. **Improved Hardenability:** Better response to heat treatment when required 3. **Cost Efficiency:** Premium over 1018 is minimal (typically 2-5%) 4. **Processing Flexibility:** Excellent for machining, forming, and finishing **Technical Superiority Areas:** - **Work Hardening Response:** Enhanced by higher Mn content - **Through-Hardening Capability:** Better than standard low-carbon grades - **Property Consistency:** Predictable in cold-drawn condition - **Surface Quality:** Excellent bright finish preserved **Ideal Application Scenarios:** - Components requiring better strength than 1018 but not needing alloy steel - Parts that may undergo subsequent heat treatment - Applications where cold work hardening is beneficial - Products requiring good machinability with enhanced properties **Market Position:** AISI 1019 occupies a valuable niche between the extremely common 1018 and the slightly higher-carbon 1020. Its availability in cold-drawn form makes it particularly attractive for manufacturers seeking to optimize both material properties and production efficiency. The grade's standardization through international equivalents like **EN C19E (1.0460)** ensures global availability and consistent quality. **Selection Criteria:** 1. **Choose 1019 over 1018 when:** Slightly higher strength or hardenability is needed 2. **Choose 1019 over 1020 when:** Better cold formability is important 3. **Consider 1019 for:** Cost-sensitive applications needing enhanced properties 4. **Evaluate 1019 against:** Alloy steels for moderate-performance applications **Final Recommendation:** For engineers and designers working with low-carbon steels, AISI 1019 cold-drawn offers a compelling option that provides measurable performance improvements with minimal cost impact. Its balanced chemistry, enhanced by the cold-drawing process, delivers reliable performance across a wide range of manufacturing operations. When specifications call for properties beyond standard 1018 but don't justify the move to alloy steels, 1019 represents an intelligent, cost-effective solution that leverages metallurgical optimization rather than expensive alloying. -:- For detailed product information, please contact sales. -: AISI 1019 Steel, cold drawn Specification Dimensions Size： Diameter 20-1000 mm Length <4770 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 1019 Steel, cold drawn Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1019 Steel Seamless tube, cold drawn -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1019 Steel Seamless tube, cold drawn -:- For detailed product information, please contact sales. -:

Packing of AISI 1019 Steel Seamless tube, cold drawn -:- 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 Seamless tube 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 1241 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