Significance and Use
The definitions and procedures for measuring flatness characteristics of steel sheet products are provided so that purchasers and suppliers have common definitions and measuring procedures
for flatness characteristics. The intention of these definitions and measuring methods is not to provide a dimensional specification for flatness characteristics, but rather common
procedure(s) for quantifying flatness anomalies. For determining compliance with flatness specifications, references are provided to appropriate ASTM standards.
1. Scope
1.1 Flatness is a significant quality characteristic of steel sheet products. Sheet flatness is affected by mill process factors plus the grade, thickness and width of the material supplied.
It is the purpose of this practice to define the different flatness characteristics and to describe the method(s) most commonly used to measure particular characteristics. The methods
described are designed and intended to be used in mill situations and environments.
1.2 The substrate shall conform to all the requirements of the appropriate specifications as follows: Specifications A568/A568M or A924/A924M .
1.3 Quantitative limits are not addressed and are established in the general requirements, or individual product specifications, or both; or when applicable, as agreed to between supplier and
user.
1.4 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system
shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard.
1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to
establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
A568/A568M Specification for Steel, Sheet, Carbon, Structural, and High-Strength, Low-Alloy, Hot-Rolled and Cold-Rolled, General Requirements for
A924/A924M Specification for General Requirements for Steel Sheet, Metallic-Coated by the Hot-Dip Process
Keywords
flatness; steel sheet; steel sheet metallic-coated; Flatness--metallic materials/applications; Steel sheet; Coated sheet products;
ICS Code
ICS Number Code 17.040.30 (Measuring instruments)
DOI: 10.1520/A1030_A1030M-11
ASTM International is a member of CrossRef.
ASTM A1030 / A1030M