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 1029 Steel Flange Composition Spec (UNS G10290) Product Information
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AISI 1029 Steel Flange Composition Spec (UNS G10290) Synonyms
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AISI 1029 Steel Composition Spec (UNS G10290) Product Information
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### **Technical Data Sheet: AISI 1029 / UNS G10290 Steel - Chemical Composition & Specification**
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#### **1. Product Overview**
AISI 1029 (UNS G10290) is a standard medium-carbon, non-alloy (carbon) steel under the ASTM AISI-SAE designation system. It is primarily defined by its chemical composition range and is not as commonly specified as the closely related AISI 1026 or 1030 grades. Its key characteristic is a balanced carbon-manganese content that provides higher strength and good hardenability compared to lower carbon steels (e.g., 1020), while maintaining reasonable ductility and machinability. It is typically supplied in hot-rolled, cold-drawn, or annealed conditions and serves as a versatile, cost-effective material for mechanical components requiring moderate strength and wear resistance, often through subsequent heat treatment.
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#### **2. Standard Chemical Composition**
The identity of AISI 1029 is defined by its chemical limits. The following table presents the standard composition ranges as per SAE J403 and related specifications.
| Element | Composition (% by Weight) | Notes |
| :--- | :--- | :--- |
| **Carbon (C)** | 0.25 - 0.31 | Primary strengthening element. Provides increased tensile strength and hardenability over 1020/1025 grades. |
| **Manganese (Mn)** | 0.60 - 0.90 | Enhances hardenability, strength, and deoxidizes the melt. Key in defining its response to heat treatment. |
| **Phosphorus (P)** | ≤ 0.040 (Max) | Impurity element. Kept low to prevent embrittlement. |
| **Sulfur (S)** | ≤ 0.050 (Max) | Impurity element. Kept low to prevent hot shortness. Higher levels (0.08-0.13%) are allowed for "resulturized" free-machining variants (e.g., 1129). |
| **Silicon (Si)** | 0.15 - 0.35 (Typical) | Common deoxidizer. Contributes to strength and hardenability. |
| **Iron (Fe)** | Balance | The base element. |
**Key Distinction:** The primary difference between **AISI 1029** and the very common **AISI 1030** lies in the manganese range. 1029 has a Mn range of 0.60-0.90%, while 1030 typically has 0.60-1.00% or 0.70-1.00% in some standards, giving 1030 marginally higher potential hardenability.
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#### **3. Typical Mechanical Properties (As-Hot Rolled or Normalized)**
*Mechanical properties are highly dependent on the processing condition (hot-rolled, cold-drawn, heat-treated) and section size. The following are approximate values for hot-rolled bars in the 19-32 mm (0.75-1.25 in) round section.*
| Property | Typical Value / Range | Condition / Note |
| :--- | :--- | :--- |
| **Tensile Strength** | 470 - 540 MPa (68 - 78 ksi) | As-Hot Rolled |
| **Yield Strength (0.2% Offset)** | 300 - 385 MPa (44 - 56 ksi) | As-Hot Rolled |
| **Elongation in 2" (50 mm)** | 18% - 22% | As-Hot Rolled |
| **Reduction of Area** | 40% - 50% | As-Hot Rolled |
| **Brinell Hardness (HB)** | 149 - 183 | As-Hot Rolled |
| **Machinability** | ~60% (vs. 100% for 1212) | In annealed or cold-drawn condition. Good with appropriate tools and speeds. |
| **Weldability** | Fair | Pre-heating and post-weld stress relief are recommended due to medium carbon content. |
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#### **4. Heat Treatment Response**
AISI 1029 is readily heat-treatable. Its medium carbon and manganese content make it suitable for processes that increase strength and wear resistance.
* **Annealing:** Heat to ~845-870°C (1550-1600°F), slow furnace cool. Produces a soft, machinable microstructure.
* **Normalizing:** Heat to ~870-925°C (1600-1700°F), air cool. Refines grain structure and improves mechanical uniformity.
* **Quenching & Tempering (Through-Hardening):**
* **Austenitizing:** ~830-855°C (1525-1575°F)
* **Quenchant:** Oil (preferred for medium sections to reduce distortion/cracking) or water (for maximum hardness on simple shapes).
* **Tempering:** Typically between 425-650°C (800-1200°F) to achieve desired strength/toughness balance. Can achieve tensile strengths well over 700 MPa (100 ksi) with proper treatment.
* **Surface Hardening:** An excellent candidate for **flame hardening** or **induction hardening**, creating a hard, wear-resistant surface while retaining a tough core.
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#### **5. International Standard Equivalents**
| Standard System | Equivalent Designation | Primary Specification |
| :--- | :--- | :--- |
| **UNS** | **G10290** | Unified Numbering System |
| **SAE / AISI** | **1029** | SAE J403 |
| **ASTM** | (Referenced in bar specs) | ASTM A29, A108 (for cold-finished) |
| **EN (Europe)** | 1.1158 (C29E) | EN 10083-2 |
| **ISO** | Type C29E | ISO 683-18 |
| **JIS (Japan)** | S28C, S30C (Similar) | JIS G4051 |
| **GB (China)** | 30# | GB/T 699 |
| **DIN (Germany)** | 1.1158, Ck29 | DIN 17200 / EN 10083-2 |
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#### **6. Primary Applications**
AISI 1029 is used in a wide range of general engineering and automotive components where a balance of strength, toughness, and cost is required, often followed by heat treatment.
* **Automotive & Transportation:**
* Axle shafts (heat-treated)
* Gears, pinions, and sprockets
* Crankshafts and connecting rods (for non-critical applications)
* Steering linkage components
* **General Machinery & Equipment:**
* Shafts, spindles, and pins (through-hardened or surface hardened)
* Bolts, studs, and fasteners (Grade 8.8 equivalent)
* Hydraulic cylinder rods and piston rods
* Forklift tines and components
* **Agricultural Equipment:**
* Implement drive shafts
* Plow shares and tillage tools (often surface hardened)
* Pivot pins and bushings
* **Forging Stock:** Used as billet material for various closed-die forgings requiring subsequent heat treatment.
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#### **7. Key Distinctions & Selection Notes**
* **vs. AISI 1026:** 1029 has higher carbon (0.29% nominal vs. 0.26%), offering slightly higher strength and hardness in the same condition.
* **vs. AISI 1030:** Chemically very similar; 1030 often has a slightly wider/higher Mn range, making it functionally interchangeable with 1029 in most applications. 1030 is far more commonly stocked and specified.
* **Procurement Tip:** Due to its lower commercial prevalence, AISI 1029 may not be readily available from stock. **AISI 1030 is often supplied in its place** as it meets or exceeds the chemical and mechanical requirements for applications designed for 1029. Always confirm with the supplier on available grades.
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**Disclaimer:** This information is for reference purposes. Actual properties can vary based on manufacturer, heat, processing history, and section size. For critical applications, always consult the specific material certification and relevant application standards.
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AISI 1029 Steel Composition Spec (UNS G10290) Specification
Dimensions
Size：
Diameter 20-1000 mm Length <4787 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 1029 Steel Composition Spec (UNS G10290) Properties
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Applications of AISI 1029 Steel Flange Composition Spec (UNS G10290)
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Chemical Identifiers AISI 1029 Steel Flange Composition Spec (UNS G10290)
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Packing of AISI 1029 Steel Flange Composition Spec (UNS G10290)
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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 1258 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
