General Machinery Component Forgings
Forged components for general machinery and industrial equipment applications manufactured and certified to ASTM A668 class requirements as specified by the customer's drawing.
Classes A Through G
Graduated Mechanical Property Framework
Carbon & Alloy Steel Coverage
Broad General Industrial Grade Range
North American Specification Standard
Default Framework Absent a More Specific Standard
EN 10204 3.1/3.2
Full Material Certification & Traceability
The North American Counterpart to Europe's General Engineering Forging Framework
ASTM A668 serves North American general industrial forging procurement in a role directly comparable to EN 10250's function in European specification practice: a broad, class-based framework specification covering carbon and alloy steel forgings for general mechanical and industrial applications that don't fall under a more targeted, application-specific standard like those governing pressure vessel, flange, or automotive components specifically. The standard's Class A through G structure provides graduated mechanical property requirements, giving purchasers and forgers a shared reference framework for specifying general-purpose forged component mechanical properties without needing to develop fully custom specifications for every component that doesn't fit a narrower application-specific standard.
ASTM A668 Forged Products
Class-Specific Structural Component Forgings
Forged structural components manufactured to the specific A668 class (A through G) matching the target application's mechanical property requirement, from lower-strength Class A through higher-strength classes.
General Industrial Shaft and Block Forgings
Forged shaft, block, and general shape forgings for industrial equipment applications where A668 provides the appropriate general-purpose specification framework.
Multi-Class Forging Programmes
Forging supply across multiple A668 classes for customers with varied component mechanical property requirements under a consistent specification framework.
Class Selection and Quality for A668 Supply
Class Selection Guidance
Guidance selecting the appropriate A668 class (A through G) based on the target component's specific mechanical property requirement, since each class carries different minimum tensile and yield strength values.
Heat Treatment for Target Class Properties
Heat treatment developing the mechanical properties the specified A668 class requires, verified through appropriate mechanical property testing.
Mechanical Property Testing
Tensile and hardness testing verifying the forging meets the specified A668 class's mechanical property requirements before release.
EN 10204 3.1/3.2 Certification
Material test certificates per EN 10204 3.1 as standard, with 3.2 third-party witnessed certification available for general industrial project documentation requirements.
The North American Counterpart to Europe's General Engineering Forging Framework
General industrial equipment manufacturing generates a genuinely broad range of forged component requirements that don't always fit neatly within the more narrowly targeted application-specific forging standards — a shaft, bracket, or structural component for general machinery doesn't necessarily need to meet the specialized requirements a pressure vessel or flange standard imposes, but it still needs a defined, verifiable mechanical property specification that purchaser and supplier can both reference with confidence. ASTM A668 exists specifically to serve this broad general industrial category, providing a class-based framework specification that covers this wide range of general-purpose forging requirements under a single, well-understood standard.
The standard's Class A through G structure reflects a deliberate design choice to provide graduated mechanical property options within this single framework, rather than requiring an entirely separate standard for each strength level a general industrial application might require: lower classes provide adequate mechanical properties for less demanding applications at correspondingly lower material and processing cost, while higher classes deliver increased strength for applications genuinely requiring it, all specified and certified within the same overall A668 documentation framework. This graduated structure makes A668 a genuinely versatile specification, capable of serving a meaningfully wide range of general industrial component requirements without forcing purchasers into either an inappropriately over-specified or under-specified mechanical property class.
For forging suppliers serving North American general industrial and machinery manufacturing customers, correctly interpreting and manufacturing against A668's class structure is a genuinely practical, frequently-encountered specification requirement — general industrial component drawings referencing A668 and a specific class designation represent a substantial share of forging demand that doesn't fall under more specialized application standards, making A668 competency a meaningful practical capability for suppliers serving this broad market segment.
For North American general machinery and industrial equipment manufacturers sourcing forged components under ASTM A668, Shivam Forge manufactures across Classes A through G with mechanical property testing and full EN 10204 3.1/3.2 certification. Contact our engineering team at +91-9265772827 or sales@shivamforge.com with your drawing and class requirement for a manufacturability review and quotation.
Frequently Asked Questions
What does ASTM A668 cover, and when is it used instead of a more specific standard?
A668 covers carbon and alloy steel forgings for general industrial use, providing a broad, class-based mechanical property framework for components that don't fall under a more targeted, application-specific standard (like pressure vessel or flange-specific specifications). It's used when a general industrial component needs a defined mechanical property specification but doesn't require the more specialized requirements a narrower application standard would impose.
How do the different A668 classes differ from each other?
A668's Classes A through G provide graduated minimum tensile and yield strength requirements, with class selection depending on your target component's specific mechanical property requirement — higher classes generally require higher strength, achieved through appropriate alloy content and heat treatment. We can help confirm appropriate class selection for your application.
How does ASTM A668 compare to EN 10250?
A668 and EN 10250 serve analogous roles in their respective specification regions — both provide broad, class or grade-based frameworks for general industrial forgings not covered by more application-specific standards. They're not identical specifications, however, so for drawings explicitly calling out one standard, we manufacture and certify against that specific standard rather than treating them as interchangeable.
What testing do you perform to verify A668 class compliance?
Tensile and hardness testing verifying the forging meets the specified class's mechanical property requirements, with results documented in EN 10204 3.1 certification as standard, and 3.2 third-party witnessed certification available.
Can you supply multiple A668 classes under a single order or programme?
Yes. Forging supply across multiple A668 classes is available for customers with varied component mechanical property requirements, supported under a consistent specification and certification framework.
Why Choose Shivam Forge
Trusted forging manufacturer — Rajkot, Gujarat
Shivam Forge delivers precision hot-forged components from our integrated Shapar, Rajkot facility — covering forging, CNC machining, heat treatment, and quality inspection under one roof.
- Hot forging from quality alloy steel billets (42CrMo4, C45, EN8, SS316L)
- In-house CNC/VMC machining to drawing — ±0.05mm tolerances
- Heat treatment — normalizing, hardening, tempering, annealing
- CMM inspection and full EN 10204 3.1 material certification
- Custom OEM forging from customer drawings — PPAP/ISIR available
- Fast export from Mundra Port — CIF worldwide, FOB India
- Export expertise — Europe, Middle East, Americas, Asia-Pacific