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GB/T 5216-2004Structural steels subject to end-quench hardenability requirements (English PDF)

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Issued by

General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ)

Level / Type

National · Recommended

Issue date

January 19, 2004

Implementation date

July 1, 2004

Scope

GB/T 5216-2004 (Structural steels subject to end-quench hardenability requirements) is available as an English-translated PDF.

GB/T 5216-2004 is the Chinese standard "Structural steels subject to end-quench hardenability requirements".

Its scope clause reads: This standard specifies the steel dimensions, shape, weight and permissible tolerances, technical requirements, test methods, inspection rules, packaging, sign and quality certificate etc. of the hot rolling and hot forging structural steels subject to end-quench hardenability requirements.

This standard is applicable to the hot rolling and forging structural steel bars of hardenability used in machinery manufacture with its diameter or thickness no less than 30 mm.

The steel hardenability is determined by edge quenching or calculated by the formula.

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Document preview — GB/T 5216-2004

National Standard of the People's Republic of China

Issued by: General Administration of Quality Supervision, Inspection and Quarantine (AQSIQ)

Attachment 1 (Corrigendum)3
Foreword4
1 Scope6
2 Normative References6
3 Order Contents9
4 Classification and Code Number10
5 Dimensions, Shape, Weight and Permissible Tolerances10
6 Technical Requirements11
7 Testing Method17
8 Inspection Rules18
9 Packaging, Marking and Quality Certificate18
Appendix A (Informative) Calculation Methods of Steel Hardenability)39
of This Standard with Overseas Grades44

1 Scope

This standard specifies the steel dimensions, shape, weight and permissible tolerances, technical requirements, test methods, inspection rules, packaging, sign and quality certificate etc. of the hot rolling and hot forging structural steels subject to end-quench hardenability requirements.

This standard is applicable to the hot rolling and forging structural steel bars of hardenability used in machinery manufacture with its diameter or thickness no less than 30 mm. The steel hardenability is determined by edge quenching or calculated by the formula.

2 Normative References

The following documents contain provisions which, through reference in this text, constitute provisions of this standard. For dated references, subsequent amendments to (excluding amending corrigendum), or revisions of, any of these publications do not apply. However, all parties who have reached an agreement according to this standard are encouraged to study whether the latest edition of these documents is applicable. For undated references, the latest edition of the normative document is applicable to this standard.

GB/T 222-1984 Method of Sampling Steel for Determination of Chemical Composition and Permissible Variations for Product Analysis

GB/T 223.3 Methods for Chemical Analysis of Iron, Steel and Alloy - The Diantipyryl

Methane Phosphomolybdate Gravimetric Method for the Determination of Phosphorus

Content

GB/T 223.5 Methods for Chemical Analysis of Iron, Steel and Alloy - The Reduced

Molybdosilicate Spectro - Photometric Method for the Determination of Acid - Soluble

Silicon Content

GB/T 223.11 Methods for Chemical Analysis of Iron, Steel and Alloy - The Ammonium

Persulfate Oxidation Volumetric Method for the Determination of Chromium Content

GB/T 223.14 Methods for Chemical Analysis of Iron, Steel and Alloy - The

N-Benzoy-N-Phenylhydroxylamine Extraction Photometric Method for the Determination of Vanadium Content

GB/T 223.16 Methods for Chemical Analysis of Iron, Steel and Alloy - The Chromotropic

Acid Photometric Method for the Determination of Titanium Content

GB/T 223.17 Methods for Chemical Analysis of Iron, Steel and Alloy - The Diantipyryl

Methane Photometric Method for the Determination of Titanium Content

GB/T 223.18 Methods for Chemical Analysis of Iron, Steel and Alloy - The

Neocuproine-Chloroform Extraction Photometric Method for the Determination of Copper

Content

GB/T 223.19 Methods for Chemical Analysis of Iron, Steel and Alloy - The

Neocuproine-Chloroform Extraction Photometric Method for the Determination of Copper

Content

GB/T 223.23 Iron, Steel and Alloy - Determination of Nickel Content - The

Dimethylglyoxime Spectrophotometric Method

GB/T 223.24 Methods for Chemical Analysis of Iron, Steel and Alloy - The Extraction

Separation - The Dimethylglyoxime Spectrophotometric Method for the Determination of

Nickel Content

GB/T 223.25 Methods for Chemical Analysis of Iron, Steel and Alloy - The

Dimethylglyoxime Gravimetric Method for the Determination of Nickel Content

GB/T 223.26 Iron, Steel and Alloy - Determination of Molybdenum Content - The

Thiocyanate Spectrophotometric Method

GB/T 223.54 Methods for Chemical Analysis of Iron, Steel and Alloy - The Flame atomic

Absorption Spectrophotometric Method for the Determination of Nickel Content (GB/T 223.54-1987, eqv ISO 4940.1985, Steel and cast iron - Determination of nickel content -

Flame-atomic. absorption spectrophtometric method)

GB/T 223.58 Methods for Chemical Analysis of Iron, Steel and Alloy - The Extraction -

Absorption Catalytic Polarographic Method for the Determination of Manganese Content

GB/T 223.59 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium

Arsenite - Sodium Nitrite Titrimetric Method for the Determination of Phosphorus Content

GB/T 223.60 Methods for Chemical Analysis of Iron, Steel and Alloy - The Perchloric

Acid Dehydration Gravimetric Method for the Determination of Silicon Content

GB/T 223.61 Methods for Chemical Analysis of Iron, Steel and Alloy - The Ammonium

Phosphomolybdate Volumetric Method for the Determination of Phosphorus Content

GB/T 223.62 Methods for Chemical Analysis of Iron, Steel and Alloy - The Butyl Acetate

Extraction Photometric Method for the Determination of Phosphorus Content

GB/T 223.63 Methods for Chemical Analysis of Iron, Steel and Alloy - The Sodium (Potassium) Periodate Photometric Method for the Determination of Manganese Content

GB/T 223.64 Iron, Steel and Alloyed - Determination of Manganese Content - Flame

Atomic Absorption Spectrometric Method

GB/T 223.68 Methods for Chemical Analysis of Iron, Steel and Alloy - The Potassium

Iodate Titration Method after Combustion in the Pipe Furnace for the Determination of

Sulfur Content

GB/T 223.69 Iron, Steel and Alloy - Determination of Carbon Contents - Gas-Volumetric

Method after Combustion in the Pipe Furnace

GB/T 223.71 Methods for Chemical Analysis of Iron, Steel and Alloy - The Gravimetric

Method after Combustion in the Pipe Furnace for the Determination of Carbon Content

GB/T 223.72 Methods for Chemical Analysis of Iron, Steel and Alloy - The Alumina

Chromatographic Separation - Bar-Ium Sulfate Gravimetric Method for the Determination of Sulphur Content

GB/T 223.75 Iron, Steel and Alloy - Determination of Boron Content - Methanol

Distillation-Curcumin Photometric Method

GB/T 223.76 M...

GB/T 3086-2019 | GB 4234.1-2017 | GB/T 3203-2016 | GB/T 4172-2000 | GB/T 8731-2025 | […]

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 44 pages — is available in the English PDF.

Referenced standards

Normative references

GB/T 223.3 · GB/T 223.5 · GB/T 223.16 · GB/T 223.17 · GB/T 223.19 · GB/T 223.24 · ISO 4940.1985 · GB/T 223.58 · GB/T 223.64 · GB/T 223.75

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