ASTM A684/A684M-86(1998) - 10.9.1998
 
1. Scope

1.1 This specification covers cold-rolled, high-carbon strip. It is furnished in the following types as specified:

1.1.1 Soft spheroidized annealed high-carbon steel is intended for applications requiring maximum cold forming. It is normally produced to give the lowest maximum Rockwell hardness for each grade.

1.1.2 Soft annealed high-carbon steel is intended for applications requiring moderate cold forming. It is produced to a maximum Rockwell hardness.

1.1.3 Intermediate hardness high-carbon steel is intended for applications where cold forming is slight or a stiff, springy product is needed, or both. It is produced to specified Rockwell hardness ranges, the maximum being higher than obtained for the annealed type.

1.1.4 Full hard high-carbon steel is intended for flat applications. It is produced to minimum Rockwell hardness requirements, which vary with grade, microstructure and gage. Full hard can be produced with either a pearlitic or spheroidized microstructure or a mixture of both. The minimum hardness should be established between the consumer and the producer.

1.2 This specification is applicable for orders in either inch-pound units (as A684) or SI units (A684M).

 
2. Referenced Documents

A1073/A1073M-21

Standard Practice for Using Hand Micrometers to Measure the Thickness of Uncoated Steel Sheet and Nonmetallic and Metallic-Coated Steel Sheet

A941-26a

Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys (Includes all amendments and changes 4/15/2026).

MIL-STD-129

Marking for Shipping and Storage

A109/A109M-25

Standard Specification for Steel, Strip, Carbon (0.25 Maximum Percent), Cold-Rolled

A370-26

Standard Test Methods and Definitions for Mechanical Testing of Steel Products

A700-14(2019)

Standard Guide for Packaging, Marking, and Loading Methods for Steel Products for Shipment

Fed. Std. No. 183

Continuous Identification Marking of Iron and Steel Products

Fed. Std. No. 123

Marking for Shipments (Civil Agencies) Available from Standardization Documents Order Desk, DODSSP, Bldg. 4, Section D, 700 Robbins Ave., Philadelphia, PA 19111-5098, http://www.dodssp.daps.mil.

E29-22

Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

E3-26

Standard Guide for Preparation of Metallographic Specimens

A751-25

Standard Test Methods and Practices for Chemical Analysis of Steel Products

A568/A568M-25a

Standard Specification for Steel, Sheet, Carbon, Structural, and High-Strength Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirements for (Includes all amendments and changes 12/5/2025).