AISI 1074 Steel, cold drawn, spheroidized, annealed

AISI 1074 Steel, cold drawn, spheroidized, annealed (discontinued) Product Information -:- For detailed product information, please contact sales. -: AISI 1074 Steel, cold drawn, spheroidized, annealed (discontinued) Synonyms -:- For detailed product information, please contact sales. -:

AISI 1074 Steel, cold drawn, spheroidized, annealed (discontinued) Product Information -:- For detailed product information, please contact sales. -: ### **Product Data Sheet: AISI 1074 Steel, Cold Drawn, Spheroidized Annealed - DISCONTINUED** #### **1. Overview & Discontinuation Notice** **Status:** **This specific grade and product form combination is considered commercially discontinued.** AISI 1074 was a very high-carbon, non-alloy steel. When supplied in the **cold-drawn, spheroidized annealed** condition, it was engineered to provide maximum softness, ductility, and uniformity for demanding **cold forging, cold heading, and machining** operations, prior to final heat treatment. The spheroidized annealed microstructure—featuring globular carbides in a soft ferrite matrix—was essential to prevent cracking during severe cold deformation. Its discontinuation is primarily due to **industry standardization and consolidation**. The mechanical properties and applications of AISI 1074 are nearly indistinguishable from the more common and widely specified **AISI 1070** and **AISI 1078/1080** grades. Manufacturers and standards organizations have streamlined offerings to reduce complexity, making 1070/1078/1080 the preferred choices for this carbon range. **Important:** For any new design or procurement, **AISI 1070 or AISI 1078/1080** in a spheroidized annealed condition should be specified as direct functional replacements. --- #### **2. Historical Chemical Composition (AISI/SAE Standard)** The composition was nearly identical to its neighboring grades, with carbon being the key differentiator. | Element | Content (%) (Typical for AISI 1074) | | :--- | :--- | | **Carbon (C)** | **0.70 - 0.80** | | **Manganese (Mn)** | 0.60 - 0.90 | | **Phosphorus (P)** | ≤ 0.040 | | **Sulfur (S)** | ≤ 0.050 | | **Silicon (Si)** | 0.15 - 0.35 | | **Iron (Fe)** | Balance | **Note:** This places it between AISI 1070 (0.65-0.75%C) and AISI 1078 (0.72-0.85%C). --- #### **3. Typical Historical Physical & Mechanical Properties (As-Delivered)** Properties in the spheroidized annealed & cold-drawn state were designed for formability. | Property | Typical Value / Description | | :--- | :--- | | **Condition** | Spheroidized Annealed + Cold Drawn | | **Tensile Strength** | ~ 520 - 620 MPa (75 - 90 ksi) | | **Yield Strength (0.2% Offset)** | ~ 415 - 550 MPa (60 - 80 ksi) | | **Elongation (in 50 mm)** | ≥ 10-12% | | **Hardness** | **75 - 88 HRB** (Rockwell B) / **137 - 190 HB** (Brinell) | | **Machinability** | Good for its carbon level. The spheroidized structure provided better chip control than a pearlitic one. | | **Cold Formability** | **Excellent.** This was the primary reason for this product form, allowing for extreme deformation in cold heading/forging. | | **Final Hardness Potential** | After quenching and tempering: **Up to 62-65 HRC**. | --- #### **4. Key Characteristics & Reason for Specific Processing** * **Spheroidized Anneal:** This was a critical, costly, and time-consuming process that transformed the hard, plate-like cementite into soft, spherical carbides. This was mandatory to make this very high-carbon steel sufficiently ductile for cold working without failure. * **Cold Drawing:** After annealing, the bar was cold drawn to improve dimensional accuracy, surface finish, and to impart a slight increase in yield strength. * **High Hardenability:** Like all steels in this carbon range, it was capable of achieving extreme hardness and wear resistance after austenitizing, quenching, and tempering. --- #### **5. Historical & Legacy Applications** When available, this product was used for applications identical to those now served by **AISI 1070/1078 spheroidized annealed wire/rod**: * **Cold Headed Fasteners:** High-strength bolts, screws, and rivets requiring severe upsetting or extrusion. * **Cold Forged Components:** Automotive and industrial parts like pins, axles, and small tools formed by cold forging. * **Springs:** Used as feedstock for cold-coiling high-stress spring wire. * **Tool Blanks:** For cutting tools and blades that were machined in the soft state before final hardening. --- #### **6. Relevant Historical & Replacement Standards** Modern procurement should reference the standards for the replacement grades. | Standard System | Historical Designation | **Replacement / Current Equivalent** | | :--- | :--- | :--- | | **AISI / SAE (USA)** | **1074 (Discontinued)** | **1070 (SAE J403)** or **1078/1080 (SAE J403)** | | **UNS (USA)** | **G10740** | **G10700** or **G10780/G10800** | | **ASTM (USA)** | *Possibly under old revisions of* | **ASTM A510** (Wire Rod) or **ASTM A29** (Bars) for grades **1070** or **1078**. | | **ASTM (USA)** | *ASTM A1074* | **Note:** ASTM A1074 is a *specification for spheroidized annealed bars*, not a grade. It can be applied to 1070/1078. | | **DIN (Germany)** | **1.1231 / C70W2** (Closest equivalent for 1070) | Same. For 1078/1080: **1.1231 / C75W2** | | **JIS (Japan)** | **SWRH72A/B or SWRH77A/B** | **SWRH72A/B (for ~1070)** or **SWRH77A/B (for ~1078/1080)** | | **GB (China)** | **70# or 75#** | **70# (GB/T 699)** or **75#/80#** | --- ### **Summary and Procurement Recommendation** **AISI 1074, cold-drawn, spheroidized annealed, is a legacy product.** Its technical niche is fully and effectively covered by the adjacent, standardized grades **AISI 1070** and **AISI 1078/1080**. **For Engineers and Purchasers:** 1. **Do not specify AISI 1074 for new projects.** 2. **For applications requiring maximum cold formability followed by high hardness:** * If the final required hardness is at the very upper extreme, specify **AISI 1078/1080 (UNS G10780/G10800), Cold Drawn, Spheroidized Annealed**. * For a marginally more forgiving material with slightly better ductility in the annealed state, specify **AISI 1070 (UNS G10700), Cold Drawn, Spheroidized Annealed**. 3. **For legacy parts or drawings:** Contact steel suppliers or distributors with the old specification. They will almost certainly recommend and supply one of the above replacement grades, potentially with a mill test report certifying it to the *properties* of the old 1074 specification. The discontinuation represents an industry move toward efficiency without a loss of technical capability. The replacement grades offer identical performance with greater availability and lower cost. -:- For detailed product information, please contact sales. -: AISI 1074 Steel, cold drawn, spheroidized, annealed (discontinued) Specification Dimensions Size： Diameter 20-1000 mm Length <4865 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 1074 Steel, cold drawn, spheroidized, annealed (discontinued) Properties -:- For detailed product information, please contact sales. -:

Applications of AISI 1074 Steel, cold drawn, spheroidized, annealed (discontinued) -:- For detailed product information, please contact sales. -: Chemical Identifiers AISI 1074 Steel, cold drawn, spheroidized, annealed (discontinued) -:- For detailed product information, please contact sales. -:

Packing of AISI 1074 Steel, cold drawn, spheroidized, annealed (discontinued) -:- 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 1336 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