High strength abrasion resistant steel plate, sheet and strip for construction machine
1 Scope
This document specifies the designation system, order information, dimension, shape, weight, technical requirements, test methods, inspection rules, packaging, marking, and quality certificate of high strength abrasion resistant steel plate, sheet and strip for construction machine.
This document is applicable to single rolled steel plate with a thickness of not greater than 120mm and steel strip and sheared sheet with a thickness of not greater than 25.4mm (hereinafter referred to as "steel plate, sheet and strip") for abrasion resistant structural components of construction machines for mining, construction and agriculture, and may be used as a reference for abrasion resistant steel plate, sheet and strip used in other fields.
2 Normative references
The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.
GB/T 222 Permissible tolerances for chemical composition of steel products
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 223.9 Iron, steel and alloy - Determination of aluminium content - Chrome azurol S photometric method
GB/T 223.11 Iron steel and alloy - Determination of chromium content - Visual titration or potentiometric titration method
GB/T 223.17 Methods for chemical analysis of iron, steel and alloy - The diantipyrylmethane photometric method for the determination of titanium 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 223.60 Methods for chemical analysis of iron, steel and alloy - The perchloric acid dehydration gravimetric method for the determination of silicon content
GB/T 223.63 Methods for chemical analysis of iron, steel and alloy - The sodium (potassium) periodate photometric method for the determination of manganese content
GB/T 223.68 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 223.78 Methods for chemical analysis of iron, steel and alloy - Curcumin spectrophotometric method for the determination of boron content
GB/T 223.79 Iron and Steel - Determination of multi-element contents - X-ray fluorescence spectrometry (routine method)
GB/T 228.1 Metallic materials - Tensile testing - Part 1: Method of test at room temperature
GB/T 229 Metallic materials - Charpy pendulum impact test method
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 232 Metallic materials - Bend test
GB/T 247 General rule of package, mark and certification for steel plates (sheets) and strips
GB/T 709-2019 Dimension, shape, weight and tolerance for hot-rolled steel strip, plate and sheet
GB/T 2975 Steel and steel products - Location and preparation of samples and test pieces for mechanical testing
GB/T 4336 Carbon and low-alloy steel - Determination of multi-element contents - Spark discharge atomic emission spectrometric method (routine method)
GB/T 8170 Rules of rounding off for numerical values & expression and judgment of limiting values
GB/T 14977 General requirement for surface condition of hot-rolled steel plates
GB/T 17505 Steel and steel products - General technical delivery requirements
GB/T 20066 Steel and iron - Sampling and preparation of samples for the determination of chemical composition
GB/T 20123 Steel and iron - Determination of total carbon and sulfur content - Infrared absorption method after combustion in an induction furnace (routine method)
GB/T 20125 Low-alloy steel - Determination of multi-element contents - Inductively coupled plasma atomic emission spectrometric method
3 Terms and definitions
For the purposes of this document, no terms and definitions apply.
4 Designation system
The designation of steel consists of "NM" (the first letters of Chinese phonetic alphabet of "Nai Mo”) and specified surface Brinell hardness, and that of steel with low-temperature toughness requirements consists of three parts: "NM" (the first letters of Chinese phonetic alphabet of "Nai Mo”), specified surface Brinell hardness and quality grade symbol (D, E).
Example 1: NM500
NM——the first letters of Chinese phonetic alphabet of "Nai Mo";
500——the surface Brinell hardness.
Example 2: NM500D
NM——the first letters of Chinese phonetic alphabet of "Nai Mo";
500——the surface Brinell hardness;
D——the quality grade symbol.
5 Order information
Contracts or orders made based on this document shall cover the following information:
a) serial number of this document;
b) product name;
c) designation;
d) dimension and unevenness precision;
e) delivery state;
f) weight;
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Designation system
5 Order information
6 Dimension, shape and weight
7 Technical requirements
8 Test methods
9 Inspection rules
10 Packaging, marking and quality certificate
Annex A (Informative) Chemical components of TiC reinforced steel
