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GB/T 33811-2017Alloy Tool and Mould Steel Sheets and Plates (English PDF)

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Issued by

MOHURD; AQSIQ

Level / Type

National · Recommended

Issue date

May 31, 2017

Implementation date

December 1, 2017

Scope

GB/T 33811-2017 (Alloy Tool and Mould Steel Sheets and Plates) is available as an English-translated PDF.

GB/T 33811-2017 — This Standard specifies the ordering content, dimensions, shape, weight, specifications, test methods, inspection rules, and packaging, marking and quality certification of alloy tool and mould steel sheets and plates (hereinafter referred to as "steel sheets and plates"). This Standard applies to cold-rolled steel sheets and plates of thickness not greater than 4 mm and hot-rolled steel sheets and plates of thickness not greater than 10 mm.

Document preview — GB/T 33811-2017

National Standard of the People's Republic of China

Issued by: MOHURD; AQSIQ

Foreword...3
1 Application Scope...4
2 Normative References...4
3 Ordering Content...6
4 Dimensions and Shape...6
5 Technical Requirements...8
6 Test Methods...11
7 Inspection Rules...12
8 Packaging, Marking and Quality Certification...13

Foreword

This Standard was drafted in accordance with the rules given in GB/T 1.1-2009.

This Standard was proposed by China Iron and Steel Association.

This Standard shall be under the jurisdiction of the National Standardization Technical

Committee on Steels (SAC/TC 183).

The drafting organizations of this Standard. Northeast Special Steel Shares Co., Ltd.,

China Metallurgical Information and Standardization Institute.

1 Application Scope

This Standard specifies the ordering content, dimensions, shape, weight,

specifications, test methods, inspection rules, and packaging, marking and quality

certification of alloy tool and mould steel sheets and plates (hereinafter referred to as

"steel sheets and plates").

This Standard applies to cold-rolled steel sheets and plates of thickness not greater

than 4 mm and hot-rolled steel sheets and plates of thickness not greater than 10 mm.

2 Normative References

The following referenced documents are indispensable for the application of this

document. For dated references, only the edition dated applies to this document. For

undated references, the latest edition of the referenced documents (including all

amendments) applies to this Standard.

GB/T 223.11, Iron, Steel and Alloy - Determination of Chromium Content - Visual

Titration or Potentiometric Titration Method

GB/T 223.13, Methods for Chemical Analysis of Iron, Steel and Alloy- the

Ammonium Ferrous Sulfate Titration Method for the Determination of Vanadium

Content

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

Benzoyl-N-Phenylhydroxylamine Extraction Photometric Method for the

Determination of Vanadium Content

GB/T 223.22, Methods for Chemical Analysis of Iron, Steel and Alloy - The Nitroso-

R-Salt Spectrophotometric Method for the Determination of Cobalt Content

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

Dimethylglyoxime Spectrophotometric Method

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

Thiocyanate Spectrophotometric Method

GB/T 223.28, Methods for Chemical Analysis of Iron Steel and Alloy - The alpha -

Benzoin Oxime Gravimetric Method for the Determination of Molybdenum Content

GB/T 223.40, Iron, Steel and Alloy - Determination of Niobium Content by the

Sulphochlorophenol S Spectrophotometric Method

GB/T 223.43, Iron Steel and Alloy - Determination of Tungsten Content -

Gravimetric Method and Spectrophotometric Method

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

Arsenite-Sodium Nitrite Titrimetric Method for the Determination of Manganese

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 223.62, Methods for Chemical Analysis of Iron, Steel and Alloy - The Butyl

Acetate Extraction Photometric Method for the Determination of Phosphorus

Content

GB/T 223.68, 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 223.71, 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 224, Determination of Depth of Decarburization of Steels

GB/T 225, Steel - Hardenability Test by End Quenching (Jominy Test)

GB/T 226, Test Method for Macrostructure and Defect of Steel by Etching

GB/T 231.1, Metallic Materials - Brinell Hardness Test - Part 1. Test Method

GB/T 247, 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 708, Dimensions, Shape, Weight and Tolerances for Cold-Rolled Plates and

Sheets

GB/T 709-2006, Dimension, Shape, Weight and Tolerances for Hot-Rolled Steel

Plates and Sheets

GB/T 1299-2014, Tool and Mould Steels

GB/T 4336, Carbon and Low-alloy Steel - Determination of Multi-element Contents

- Spark Discharge Atomic Emission Spectrometric Method (Routine Method)

GB/T 6394, Metal - Methods for Estimating the Average Grain Size

GB/T 8651, Flaw Detection Method by the Ultrasonic Plate Wave for Metal Plates

4.4.1 Steel plates and sheets of other dimensions may be supplied, which shall be

as agreed on by the supplier and the purchaser and stated in the contract.

4.4.2 Steel plates and sheets of higher rolling precision may be supplied, which shall

be as agreed on by the supplier and the purchaser and stated in the contract.

5 Technical Requirements

5.1 Designation and chemical composition

The designation and chemical composition (product analysis composition) of steels

shall be as specified in Table 3. Steels of other designations in GB/T 1299-2014 may

also be supplied as required by the purchaser, which shall be stated in the contract.

5.2 Smelting method

Steels shall be smelted with the method of electric furnace + vacuum refining or

electroslag remelting. When the electroslag remelting smelting is required, it shall be

stated in the contract.

5.3 Delivery condition

5.3.1 Steel plates and sheets shall be delivered in the state of annealing.

5.3.2 Steel plates and sheets may be delivered in the state of acid pickling as

required by the purchaser, which shall be stated in the contract.

5.4 Hardness

5.4.1 The Brinell hardness of steel plates and sheets under the delivery condition

shall be as specified in Table 4.

5.4.2 For steel plates and sheets of thickness not greater than 1.5 mm, when the

supplier is capable of ensuring the hardness under the delivery condition is as specified

in Table 4, the testing for hardness under the delivery condition may be omitted.

5.5 Macrostructure

There shall be no visible shrinking hole remnants, cracks and inclusions on the acid

pickling macrostructural test pieces of steel plates and sheets or steel billets.

5.6 Nonmetallic inclusions

The nonmetallic inclusions of steel plates and sheets shall be tested and assessed in

accordance with Method A in GB/T 10561-2005; the results shall be as specified in

Table 5. When delivery is made as required for Group 1, it shall be stated in the contract,

or they shall be delivered as required for Group 2.

tested as required by the purchaser, which shall be stated in the contract; the specific

indexes are as agreed on by the supplier and the purchaser.

5.9 Surface quality

5.9.1 Steel plates and sheets shall not be layered; the surfaces shall be free from

bubbles, inclusions, scars and cracks.

5.9.2 The surface of cold-rolled steel plates and sheets shall be free from hard spots

small scratches, indentations, local pits and roller marks. Their depth shall not be

greater than half of the tolerances and they shall not make steel plates and sheets less

than the minimum allowable thickness.

5.9.3 The surface of hot-rolled steel plates and sheets shall be free from hard spots,

indentations, scratches and thin scales. Their depth shall be within the tolerance range

and they shall not make steel plates and sheets less than the minimum allowable

thickness.

5.9.4 The local defects of steel plates and sheets are allowed to be removed; the

depth of removal shall not make steel plates and sheets less than the minimum

allowable thickness.

5.10 Special requirements

The following test items may be added as required by the purchaser, which shall be as

agreed on by the supplier and the purchaser and stated in the contract.

a) special chemical composition;

b) special hardness;

c) grain size;

d) ultrasonic testing;

e) other requirements.

6 Test Methods

6.1 Test items and test methods for steel plates and sheets

The test items and test methods for each batch of steel plates and sheets shal...

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

Referenced standards

Normative references

GB/T 223.11 · GB/T 223.13 · GB/T 223.14 · GB/T 223.28 · GB/T 223.58 · GB/T 223.60

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