GB/T 9941-2009High speed tool steel sheets and plates (English PDF)

Foreword

This standard replaces GB/T 9941-1988 "high-speed tool steel sheets and technical conditions." this standard compared with GB/T 9941-1988, the main changes are as follows.

--- Standard name was changed to "high-speed tool steel plate";

--- Added "order contents" clause;

--- Added "smelting method" clause;

--- Minimum width of hot rolled steel sheet and the minimum length is adjusted to 500mm;

--- Added "According to the requirements, and indicate in the contract, pickling steel sheet delivery";

--- Increased W6Mo5Cr4V2Co5 grades and the relevant technical requirements;

--- Brinell hardness test specifications from a thickness greater than 1.3mm adjusted to a thickness greater than 1.5mm;

--- Increased steel electroslag predetermined set of samples and the number of samples and sampling site.

The standard proposed by China Iron and Steel Association.

This standard is under the jurisdiction of the National Steel Standardization Technical Committee.

This standard is mainly drafted by. Tung Wah Group of Chongqing Special Steel Co., Ltd., Zhejiang Jinyun Saw Co., Ltd. Han River Metallurgical Technologies AG the company, Metallurgical Industry Information Standards Institute.

1 Scope

This standard specifies the high-speed tool steel plate ordering content, size, shape and tolerances, technical requirements, test methods, inspection rules, Packaging, marking and quality certification.

This standard applies to a thickness of not more than 4mm of cold rolled steel and hot rolled steel sheet thickness of not more than 10mm of.

2 Normative references

The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.

GB/T 223.5 steel measuring soluble silicon and total silicon content reduced silicon molybdate salt spectrophotometric method GB/T 223.8 Determination of the amount of aluminum, steel and alloy chemical analysis of sodium fluoride separation -EDTA titration Determination of GB/T 223.11 steel and alloy chromium content of visual titration or potentiometric titration 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 223.19 Methods for chemical analysis of iron, steel and alloy neocuproine - chloroform extraction spectrophotometric determination of copper content Determination of cobalt content GB/T 223.20 Methods for chemical analysis of iron, steel and alloys by potentiometric titration GB/T 223.22 Methods for chemical analysis of iron, steel and alloy nitrite R salt spectrophotometric determination of cobalt content GB/T 223.23 steel and alloy - Determination of nickel content dimethylglyoxime spectrophotometry GB/T 223.26 steel and alloy - Determination of molybdenum content - Thiocyanate spectrophotometric GB/T 223.28 Determination of molybdenum steel and alloy chemical analysis method alpha- benzoin gravimetric method GB/T 223.43 steel and alloy of tungsten content - Gravimetric method and spectrophotometry GB/T 223.53 Methods for chemical analysis of iron, steel and alloys by flame atomic absorption spectrophotometric method for determination of copper content GB/T 223.54 Methods for chemical analysis of iron, steel and alloys by flame atomic absorption spectrophotometric method for determination of nickel content GB/T 223.58 Methods for chemical analysis of iron, steel and alloys of sodium arsenite - sodium nitrite determination of manganese content titration GB/T 223.59 Steel and Alloy Determination of phosphorus content by bismuth phosphomolybdate blue spectrophotometric method and antimony phosphomolybdate blue spectrophotometry GB/T 223.60 Methods for chemical analysis of iron, steel and alloy perchloric acid dehydration gravimetric method for the determination of silicon content GB/T 223.62 Methods for chemical analysis of iron, steel and alloy butyl acetate extraction spectrophotometric determination of phosphorus content GB/T 223.63 Methods for chemical analysis of iron, steel and alloy The sodium (potassium) for Determination of amount GB/T 223.64 steel and alloy manganese content - Flame Atomic Absorption Spectrometry Determination of cobalt content GB/T 223.65 Methods for chemical analysis of iron, steel and alloys by flame atomic absorption spectrometry GB/T 223.66 Methods for chemical analysis of iron, steel and alloy The thiocyanate - chlorpromazine hydrochloride - chloroform extraction spectrophotometric determination of the amount of tungsten GB/T 223.67 steel and alloy sulfur content - Methylene blue spectrophotometric method Determination of sulfur content of potassium iodate titration method after GB/T 223.68 Methods for chemical analysis of iron, steel and alloy tube furnace combustion GB/T 223.69 after carbon and alloy steel - Determination of the pipe furnace combustion gas volumetric method GB/T 223.72 steel and alloy sulfur content - Gravimetric method GB/T 223.76 Methods for chemical analysis of iron, steel and alloys by flame atomic absorption spectrometry of vanadium content Determination of depth of decarburization GB/T 224 steel GB/T 226 steel macrostructure and defect etching test method GB/T 231.1 Brinell hardness test - Part 1. Test method (GB/T 231.1-2002, eqv ISO 6506-1.

1999)