1,We Manufacturing processes are primarily classified into four types:
1:Forging,
2:Casting,
3:Cutting,
4:Rolling.
2,We can manufacture in accordance with these standards.
Standards:
GB Series (Chinese Standards), JB Series (Machinery Standards), HG Series (Chemical Industry Standards), ASME B16.5 (American Standards), BS4504 (British Standards), DIN (German Standards), and JIS (Japanese Standards).
Internationally, there are two primary systems of pipe flange standards: the European system, represented by the German DIN standards (including those of the former Soviet Union), and the American system, represented by the US ANSI pipe flange standards. Other common standards include: the Chinese Ministry of Machinery Industry standards (JB series), the Ministry of Chemical Industry standards (HG series), the Chinese National Standard *GB/T 9112–9124-2010 Steel Pipe Flanges*, as well as US standards (ASME B16.5), British standards (BS4504), German standards (DIN), Japanese standards (JIS), and marine standards (CBM), among others.
The nominal pressure ratings for the PN series are designated by "PN" and comprise the following nine levels: PN2.5, PN6, PN10, PN16, PN25, PN40, PN63, PN100, and PN160.
The nominal pressure ratings for the Class series are designated by "Class" and comprise the following six levels: Class150, Class300, Class600, Class900, Class1500, and Class2500.
Flange Classification
1. **According to Chemical Industry Standards:** Flanges are classified as follows:
Plate Flat Welding Flange (PL), Necked Flat Welding Flange (SO), Necked Butt Welding Flange (WN), Integral Flange (IF), Socket Welding Flange (SW), Threaded Flange (Th), Butt Welding Ring Loose Flange (PJ/SE), Blind Flange (BL), Flat Welding Ring Loose Flange (PJ/PJ), and Lined Blind Flange (BL(s)).
2. **According to Petrochemical (SH) Industry Standards:** Flanges are classified as follows:
Threaded Flange (PL), Butt Welding Flange (WN), Flat Welding Flange (SO), Socket Welding Flange (SW), Loose Flange (LJ), and Blind Flange (no specific designation).
3. **According to Machinery (JB) Industry Standards:** Flanges are classified as follows:
Integral Flange, Butt Welding Flange, Plate Flat Welding Flange, Butt Welding Ring Plate Loose Flange, Flat Welding Ring Plate Loose Flange, Lap Joint Ring Plate Loose Flange, and Blind Flange.
4. **According to Connection Method/Type:** Flanges are classified as follows:
Plate Flat Welding Flange, Necked Flat Welding Flange, Necked Butt Welding Flange, Socket Welding Flange, Threaded Flange, Blind Flange, Necked Butt Welding Ring Loose Flange, Flat Welding Ring Loose Flange, Ring-Type Joint (RTJ) Flange and Blind Flange, Large-Diameter Plate Flange, Large-Diameter High-Neck Flange, Figure-8 Blind Plate, Butt Welding Ring Loose Flange, etc.
5. **According to the Component Being Connected:** Flanges can be classified into Vessel Flanges and Pipe Flanges.
6. **According to Structural Type:** Flanges include Integral Flanges, Threaded Flanges, Flat Welding Flanges, Butt Welding Flanges, Lap Joint (Loose/Swivel) Flanges, and Blind Flanges.
A flange—also referred to as a flange plate or rim—is a component used to connect shafts to one another, or, more commonly, to join the ends of pipes. Flanges are also utilized at the inlet and outlet ports of equipment to facilitate connections between two devices—for instance, the flange on a speed reducer. A "flange connection" or "flanged joint" refers to a detachable joint assembly comprising three interconnected elements—a flange, a gasket, and bolts—that together form a sealed structural unit. In the context of piping systems, a "pipe flange" specifically denotes a flange used for plumbing within the installation; when applied to equipment, it refers to the inlet or outlet flange of that specific device. Flanges feature a series of holes through which bolts are inserted to securely fasten the two flanges together, while a gasket placed between the flanges ensures a leak-proof seal. Flanges are broadly categorized into three types: threaded (screw-in) flanges, welded flanges, and clamp-type flanges. Flanges are invariably used in pairs; threaded flanges are suitable for low-pressure piping applications, whereas welded flanges are required for systems operating at pressures exceeding 4 kilograms per square centimeter. A sealing gasket is inserted between the two flange plates, which are then firmly secured using bolts. The thickness of a flange—as well as the specifications of the bolts used to fasten it—vary depending on the specific pressure rating required for the application. When connecting equipment such as water pumps or valves to piping systems, the corresponding connection points on these devices are often manufactured in the shape of a matching flange; this method of attachment is also referred to as a "flange connection." Generally, any connecting component that utilizes bolts to join and seal the perimeters of two flat surfaces—such as the joints in ventilation ducts—is termed a "flange"; such components may collectively be classified as "flange-type parts." However, since such a connection often constitutes merely a *portion* of a larger device—for instance, the interface between a flange and a water pump—it would be inappropriate to classify the entire water pump itself as a "flange-type part." Conversely, smaller components—such as valves—that feature such flanged interfaces may indeed be appropriately categorized as "flange-type parts."
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AISI M1023 Merchant Quality Carbon Steel Flange, Composition Spec Product Information
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AISI M1023 Merchant Quality Carbon Steel Flange, Composition Spec Synonyms
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AISI M1023 Merchant Quality Carbon Steel, Composition Spec Product Information
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# **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
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## **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.*
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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
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AISI M1023 Merchant Quality Carbon Steel, Composition Spec Properties
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Applications of AISI M1023 Merchant Quality Carbon Steel Flange, Composition Spec
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Chemical Identifiers AISI M1023 Merchant Quality Carbon Steel Flange, Composition Spec
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Packing of AISI M1023 Merchant Quality Carbon Steel Flange, Composition Spec
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Standard Packing:
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Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and Steel Flange 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
