ISO 1035-4-1982 PDF

Full title and description

ISO 1035-4:1982 — Hot-rolled steel bars — Part 4: Tolerances. Specifies metric dimensional tolerances for hot-rolled steel bars supplied in straight lengths in the forms of round, square, hexagonal, octagonal and flat bars; defines tolerance classes and notes that achievable tolerances may vary with steel type.

Abstract

This part of ISO 1035 establishes dimensional tolerance limits and tolerance classes for metric hot-rolled steel bars in straight lengths (round, square, hexagonal, octagonal and flat). It is a short technical publication focused on size and form tolerances rather than material or mechanical properties.

General information

• Status: Published (current edition under review/to be revised).
• Publication date: August 1982 (1982-08).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 77.140.60 (steel products; bars).
• Edition / version: Edition 2 (1982).
• Number of pages: 3.

Scope

Gives metric dimensional tolerances applicable to hot-rolled steel bars supplied in straight lengths in the forms of round bars, square bars, hexagonal bars, octagonal bars and flat bars. The standard specifies several tolerance classes and notes that the tolerances manufacturers can achieve depend on steel type and production method.

Key topics and requirements

• Defined tolerance classes for hot-rolled steel bars.
• Dimensional tolerances for multiple cross-sectional shapes: round, square, hexagonal, octagonal and flat.
• Application limited to bars supplied in straight lengths.
• Recognition that achievable tolerances vary with steel grade and manufacturing process.
• Short technical format intended to be used alongside the other parts of the ISO 1035 series that define preferred sizes and masses.

Typical use and users

Used by steel producers, quality-control and inspection departments, procurement and specifications engineers, product designers and standards committees. Typical applications include procurement specifications, acceptance testing, dimensional inspection and interchangeability checks for hot-rolled bar stock in manufacturing and construction.

Related standards

Part of the ISO 1035 series (Hot-rolled steel bars). Related parts include ISO 1035-1 (dimensions of round bars), ISO 1035-2 (dimensions of square bars) and ISO 1035-3 (dimensions of flat bars). The series is being consolidated under a newer project (ISO/FDIS 1035) to combine dimensions, shapes, masses and tolerances into a single document.

Keywords

hot-rolled steel bars, tolerances, dimensional tolerances, round bars, square bars, hexagonal bars, octagonal bars, flat bars, ISO 1035, steel bar sizing, tolerance classes

FAQ

Q: What is this standard?

A: ISO 1035-4:1982 is the part of the ISO 1035 series that sets metric dimensional tolerances for hot-rolled steel bars supplied in straight lengths.

Q: What does it cover?

A: It covers tolerance limits and tolerance classes for various bar cross-sections (round, square, hexagonal, octagonal and flat) and applies to hot-rolled bars supplied in straight lengths; it does not specify mechanical properties or chemical composition.

Q: Who typically uses it?

A: Steel manufacturers, quality/inspection personnel, procurement/specification engineers, designers and testing laboratories use it to define and verify dimensional requirements for hot-rolled bar stock.

Q: Is it current or superseded?

A: The document was published in August 1982 (Edition 2) and was last reviewed and confirmed in recent systematic reviews; it remains published but is listed for revision and is expected to be replaced by a consolidated ISO/FDIS 1035 project that will combine dimensions, masses and tolerances.

Q: Is it part of a series?

A: Yes — ISO 1035 is a multipart series on hot-rolled steel bars (parts addressing round, square, flat bars and tolerances). Work is in progress to consolidate these parts into a single updated standard (ISO/FDIS 1035).

Q: What are the key keywords?

A: Hot-rolled steel bars, dimensional tolerances, tolerance classes, round/square/flat bars, ISO 1035.