Editorial Technical Reference

Steel Forging

This page explains how Steel Forging is classified within Basic Metal Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

Steel forging is a metal part shaped by compressive forces at high temperature, offering superior strength and durability for demanding applications.

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Product Specifications

Technical details and manufacturing context for Steel Forging

Definition

Steel forgings are used in automotive, aerospace, oil & gas, and heavy machinery components such as crankshafts, connecting rods, gears, flanges, and structural parts. They are specified by material grade, dimensions, mechanical properties, and tolerances, often per standards like ASTM, DIN, or GB. Grades vary from carbon steels (e.g., AISI 1045) for general use to alloy steels (e.g., 4140, 4340) for high-strength applications, and stainless steels (e.g., 304, 316) for corrosion resistance. The forging process refines grain structure, improving fatigue life and impact resistance compared to cast or machined parts.

Working Principle

Steel forging works by applying compressive force to heated metal, causing plastic deformation that reshapes it into a desired geometry. This process eliminates internal voids, aligns grain flow with the part's contour, and enhances mechanical properties such as tensile strength and toughness. The result is a dense, structurally sound component capable of withstanding high stress and impact loads.

Common Materials

AISI 1045, AISI 4140, AISI 4340, AISI 8620, Stainless Steel 304, Stainless Steel 316, GB 45#, GB 40Cr

Technical Parameters

Parameter	Typical range	Notes & selection driver
Forging Weight Range	0.1–5000 kg	Typical range for steel forgings from Chinese suppliers.
Maximum Diameter	2000 mm	For round forgings; larger sizes possible on request.
Length Range	50–6000 mm	For shaft-type forgings.
Dimensional Tolerance	±0.5–±3.0 mm	Depends on forging complexity and size.GB/T 12362
Tensile Strength	450–1200 MPa	Varies with material grade and heat treatment.ASTM A668
Yield Strength	250–1000 MPa	Varies with material grade and heat treatment.ASTM A668
Hardness	HB 150–450 HB	After heat treatment; depends on grade.ASTM A668
Impact Toughness (Charpy V-notch)	27–100 J	At room temperature or specified low temperature.ASTM A370
Surface Roughness	Ra 1.6–12.5 μm	As-forged; machining can achieve finer.
Heat Treatment	Annealed, Normalized, Quenched & Tempered	Specified per material and application.
Ultrasonic Testing	ASTM A388	Optional; for critical applications.ASTM A388
Magnetic Particle Testing	ASTM E709	For surface defect detection.ASTM E709
Forging Ratio	3:1–10:1	Ratio of cross-sectional area reduction; affects grain flow and properties.
Operating Temperature Range	-40 to 300 °C	Typical for carbon and alloy steels; varies with grade.

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Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Steel Forging.

Published Manufacturer Relationships

Source-reviewed profile relationships currently associated with Steel Forging

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Data Basis

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Preliminary Technical Classification

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