AISI M1023 Merchant Quality Carbon Steel Seamless tube

AISI M1023 Merchant Quality Carbon Steel Seamless tube, Composition Spec Product Information -:- For detailed product information, please contact sales. -: AISI M1023 Merchant Quality Carbon Steel Seamless tube, Composition Spec Synonyms -:- For detailed product information, please contact sales. -:

AISI M1023 Merchant Quality Carbon Steel, Composition Spec Product Information -:- For detailed product information, please contact sales. -: # **Product Datasheet: AISI M1023 Merchant Quality Carbon Steel (Composition Specification)** ## **Product Overview** AISI M1023 (Merchant Quality) is a standard-grade, low-carbon steel primarily supplied in common merchant forms such as bars, rods, and structural shapes for general-purpose applications. The "Merchant Quality" designation indicates it is produced to standard commercial quality requirements, with focus on cost-effectiveness and suitability for non-critical applications where precise mechanical property guarantees are not the primary concern. This steel offers good formability, weldability, and machinability at an economical price point, making it a versatile choice for fabrication, construction, and basic manufacturing purposes. --- ## **1. Chemical Composition Specification (Weight %)** The chemical composition defines the fundamental characteristics of AISI M1023 Merchant Quality steel. Ranges are typically broader than for "Special Quality" or "Structural Quality" grades to accommodate standard production practices. | Element | Standard Range | Merchant Quality Typical Range | Metallurgical Role | |---------|----------------|--------------------------------|-------------------| | **Carbon (C)** | 0.20 – 0.25 | 0.20 – 0.25 | Primary strength contributor | | **Manganese (Mn)** | 0.30 – 0.60 | 0.30 – 0.60 | Enhances strength & hardenability | | **Phosphorus (P)** | ≤ 0.040 | 0.025 – 0.040 | Residual element (controlled) | | **Sulfur (S)** | ≤ 0.050 | 0.025 – 0.050 | Improves machinability | | **Iron (Fe)** | Balance | Balance | Base matrix | | **Silicon (Si)** | ≤ 0.40 (typical) | 0.15 – 0.35 | Deoxidizer, strength contributor | *Note: Merchant Quality steel may have less stringent control over residual elements (Cu, Ni, Cr, etc.) compared to special quality grades.* --- ## **2. Typical Physical & Mechanical Properties** Properties are highly dependent on the specific form (hot-rolled, cold-drawn, etc.), section size, and processing history. The following represents typical ranges for merchant quality material. **A. As-Hot-Rolled Condition (Most Common Supply Form)** | Property | Typical Range | Remarks | |----------|---------------|---------| | **Ultimate Tensile Strength** | 380 – 480 MPa (55 – 70 ksi) | Varies with section size | | **Yield Strength (Rp0.2)** | 230 – 310 MPa (33 – 45 ksi) | Minimum not always guaranteed | | **Elongation (in 50 mm)** | 18 – 25% | | | **Hardness** | 110 – 160 HB | | | **Machinability Rating** | 65 – 75% (relative to 1212 steel) | Good for general purpose | | **Density** | 7.85 g/cm³ | | **B. Physical Properties** - **Modulus of Elasticity:** 190 – 210 GPa (27.5 – 30.5 × 10⁶ psi) - **Poisson's Ratio:** 0.29 – 0.30 - **Coefficient of Thermal Expansion:** 11.7 × 10⁻⁶/°C (20–100°C) - **Thermal Conductivity:** 49 – 53 W/m·K - **Electrical Resistivity:** 0.17 – 0.20 μΩ·m --- ## **3. Primary Applications** Merchant Quality M1023 is used in applications where cost is a major factor and precise mechanical properties are not critical to performance. - **General fabrication:** Brackets, frames, supports, and welded structures - **Construction components:** Non-structural elements, temporary supports, formwork - **Agricultural equipment:** Implements, mounting brackets, simple tools - **Common fasteners:** Standard bolts, nuts, washers (when heat-treated) - **Pipe and tubing:** For non-pressure applications - **Hardware products:** Hinges, handles, simple mechanisms - **Forging stock:** For simple forged components - **Machined parts:** Non-critical components with generous safety factors --- ## **4. Conforming International Standards (Merchant Quality Equivalents)** | Standard System | Standard Number | Equivalent Designation | Quality Level | |----------------|----------------|------------------------|--------------| | **UNS/SAE/AISI** | G10230 | M1023 (M = Merchant Quality) | Base specification | | **ASTM (USA)** | **ASTM A283** | Grade C | General structural steel | | **ASTM** | ASTM A36 | - | Structural steel (similar applications) | | **ASTM** | ASTM A575 | Grade M1023 | Merchant quality bars | | **ISO (International)** | ISO 630 | Fe430B | Structural steels - equivalent class | | **EN (Europe)** | EN 10025-2 | S235JR | Non-alloy structural steel | | **JIS (Japan)** | JIS G3101 | SS330/SS400 | General structural steel | | **GB (China)** | GB/T 700 | Q235 | Carbon structural steel | --- ## **5. Processing Characteristics** **Forming & Fabrication:** - **Weldability:** Excellent - can be welded by all common processes without pre-heat (for typical sections) - **Formability:** Good - suitable for bending, rolling, and moderate forming operations - **Machinability:** Fair to good - benefits from sulfur content for chip breaking - **Heat Treatment:** Can be annealed, normalized, or case hardened for improved properties **Supply Conditions:** - **Primary Forms:** Hot-rolled rounds, squares, flats, angles, channels - **Surface:** Standard mill scale (as-rolled) - **Tolerances:** Commercial/merchant tolerances (wider than precision grades) - **Testing:** Typically supplied without certified mechanical tests unless specified --- ## **6. Advantages & Limitations** **Advantages:** 1. **Cost-effective** - Most economical steel grade for general applications 2. **Widely available** in standard sizes and forms 3. **Good weldability and formability** for fabrication 4. **Adequate strength** for many non-critical applications 5. **Simplified specification** reduces procurement complexity **Limitations:** 1. **Variable properties** - Less consistent than special quality grades 2. **Limited guarantees** - Mechanical properties not always certified 3. **Surface quality** - May have more imperfections than higher grades 4. **Size limitations** - May not be available in all sections or conditions 5. **Not suitable** for critical structural or safety applications --- ## **7. Quality Considerations & Ordering Information** **Typical Order Specification:** ``` Material: AISI M1023 Merchant Quality Form: Round Bar (or other shape) Size: [Diameter/ Dimensions] Condition: As-rolled (or specified) Standard: ASTM A575 (or other applicable) Quantity: [Amount] ``` **Quality Documentation:** - **Standard:** Mill test report optional (may incur additional cost) - **Certified:** EN 10204 Type 2.1 or 2.2 typically available - **Special requirements:** Must be specified and may affect price **Important Note:** For applications where mechanical properties are critical, consider upgrading to "Special Quality" (ASTM A576) or "Structural Quality" grades with guaranteed properties. Merchant Quality steel is intended for applications where the cost-benefit ratio favors economical material over precisely controlled properties. --- ## **8. Comparison with Other Quality Levels** | Quality Aspect | Merchant Quality (M1023) | Special Quality (1023) | Structural Quality | |----------------|-------------------------|-----------------------|-------------------| | **Chemical Control** | Standard ranges | Tighter control | Specific ranges | | **Mechanical Guarantees** | Typically none | Minimum properties guaranteed | Minimum properties guaranteed | | **Internal Soundness** | Standard practice | Improved practice | Strict requirements | | **Surface Quality** | Commercial standards | Better surface | Best surface | | **Cost** | Lowest | Moderate | Higher | | **Applications** | Non-critical | General mechanical | Structural | *This datasheet provides general information for specification purposes. For critical applications, consult with material engineers and request specific testing to ensure suitability.* -:- For detailed product information, please contact sales. -: AISI M1023 Merchant Quality Carbon Steel, Composition Spec Specification Dimensions Size： Diameter 20-1000 mm Length <5483 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 M1023 Merchant Quality Carbon Steel, Composition Spec Properties -:- For detailed product information, please contact sales. -:

Applications of AISI M1023 Merchant Quality Carbon Steel Seamless tube, Composition Spec -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI M1023 Merchant Quality Carbon Steel Seamless tube, Composition Spec -:- For detailed product information, please contact sales. -:

Packing of AISI M1023 Merchant Quality Carbon Steel Seamless tube, Composition Spec -:- 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 1954 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