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GB/T 3621-2022 PDF in English


GB/T 3621-2022 (GB/T3621-2022, GBT 3621-2022, GBT3621-2022)
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GB/T 3621-2022: PDF in English (GBT 3621-2022)

GB/T 3621-2022
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 77.150.50
CCS H 64
Replacing GB/T 3621-2007
Titanium and titanium alloy plate and sheet
ISSUED ON: OCTOBER 12, 2022
IMPLEMENTED ON: MAY 01, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative references ... 5
3 Terms and definitions ... 6
4 Classification and identification ... 6
5 Technical requirements ... 7
6 Test methods ... 15
7 Test rules ... 16
8 Marking, packaging, transportation, storage and accompanying documents ... 17
9 Order form contents ... 19
Foreword
This document was drafted in accordance with the rules provided in GB/T 1.1-2020
Directives for standardization - Part 1: Rules for the structure and drafting of
standardizing documents.
This document replaces GB/T 3621-2007 Titanium and titanium alloy plate and sheet.
Compared with GB/T 3621-2007, in addition to structural adjustments and editorial
changes, the main technical changes are as follows:
a) Add the requirements for the recommended nominal size of the product (see 4.1.2);
b) Change the technical requirements for TA1, TA2, TA3 products; delete TA4 (see
Table 1, Table 5, Table 7; Table 1, Table 5, Table 7 of the 2007 edition);
c) Add the technical requirements for TA0, TA1G, TA1GELI, TA2G, TA3G, TA4G,
TA22, TA23, TA24, TA32, TC20 products (see Table 1, Table 5, Table 7);
d) Change the specification range of the product (see Table 1; Table 1 of the 2007
edition);
e) Change the requirements for the allowable dimensional deviation of plate and
sheet (see Table 2, Table 3, Table 4; Table 2, Table 3, Table 4 of the 2007 edition);
f) Change the requirements for mechanical properties and bending properties (see
Table 5, Table 6, Table 7; Table 5, Table 6, Table 7 of the 2007 edition);
g) Add the requirements for the β transus temperature (see 5.5);
h) Change the requirements for appearance quality (see 5.6; 3.6 of the 2007 edition);
i) Change the analysis method of chemical composition (see 6.1; 4.1 of the 2007
edition);
j) Change the test method for tensile properties at room temperature (see 6.3.1; 4.3.1
of the 2007 edition);
k) Change the test method for high temperature tensile properties (see 6.3.2; 4.3.2 of
the 2007 edition);
l) Change the requirements for the samples for bending properties (see 6.4; 4.4 of
the 2007 edition);
m) Change the inspection and acceptance requirements (see 7.1; 5.1 of the 2007
edition).
Please note that some of the contents of this document may involve patents. The issuing
organization of this document is not responsible for identifying patents.
Titanium and titanium alloy plate and sheet
1 Scope
This document specifies the classification and identification, technical requirements,
test methods, inspection rules, marking, packaging, transportation, storage, as well as
accompanying documents and order forms, of titanium and titanium alloy plate and
sheet (hereinafter referred to as plate and sheet).
This document applies to plate and sheet produced by the rolling method.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this
document and are indispensable to its application. For dated references, only the version
corresponding to that date is applicable to this document; for undated references, the
latest version (including all amendments) is applicable to this document.
GB/T 228.1-2021, Metallic materials - Tensile testing - Part 1: Method of test at
room temperature
GB/T 228.2, Metallic materials - Tensile testing - Part 2: Method of test at elevated
temperature
GB/T 232, Metallic materials - Bend test
GB/T 2039, Metallic materials - Uniaxial creep testing method in tension
GB/T 3620.1, Designation and composition of titanium and titanium alloys
GB/T 3620.2, Designation and composition of titanium and titanium alloys
GB/T 4698 (all parts), Methods for chemical analysis of titanium sponge, titanium
and titanium alloys
GB/T 6611, Terminology and metallographs for titanium and titanium alloys
GB/T 8180, Wrought titanium and titanium alloy products packing marking
transporting and storing
GB/T 23605, Determination of β transus temperature of titanium alloys
GB/T 38982, Method of measuring shape and dimension for wrought titanium and
titanium alloy products
YS/T 1262, Method for chemical analysis of titanium sponge, titanium and titanium
alloys - Determination of multielement content - Inductively coupled plasma atomic
emission spectrometry
3 Terms and definitions
Terms and definitions determined by GB/T 6611 and GB/T 38982 are applicable to this
document.
4 Classification and identification
4.1 Product classification
4.1.1 The designation, state and specifications of the product shall comply with the
provisions in Table 1.
4.1.2 The nominal size of plate and sheet shall be within the range specified in Table 1.
It is recommended that for plate and sheet with a thickness not greater than 5.0 mm, the
nominal thickness should be an integral multiple of 0.1 mm; for plate and sheet with a
thickness greater than 5.0 mm, the nominal thickness should be an integral multiple of
0.5 mm; the nominal width of plate and sheet should be an integer multiple of the width
of 10 mm; the nominal length should be an integer multiple of the length of 50 mm.
4.2 Product identification
Products are identified in the order of product name, designation, state, specifications,
and document number.
Example 1: A plate, manufactured with the TA2 designation, in annealed state, with a
thickness of 1.0 mm, a width of 1 000 mm and a length of 2 000 mm, is identified as:
6 Test methods
6.1 Chemical composition
The chemical composition analysis of the product shall be carried out according to the
provisions of GB/T 4698 (all parts) or YS/T 1262, and the arbitration analysis shall be
carried out according to the provisions of GB/T 4698 (all parts).
6.2 Dimensions and their allowable deviation
The measurement of the external dimensions of the product and its allowable deviation
shall be carried out in accordance with the provisions of GB/T 38982, wherein the
allowable deviation of thickness shall be measured at a position not less than 100 mm
from the top corner and not less than 10 mm from the edge.
6.3.1 Mechanical properties
6.3.1 The tensile properties of the product at room temperature shall be carried out in
accordance with the provisions of GB/T 228.1-2021. For plates with a thickness less
than 3.0 mm, take P1 samples; for plates with a thickness of 3.0 mm ~ 6.0 mm, take P7
samples; for plates with a thickness greater than 6.0 mm ~ 10.0 mm, take P7 or R8
samples; for plates with a thickness greater than 10.0 mm, take P7 or R7 sample.
6.3.2 The test of high temperature tensile properties of the product shall be carried out
in accordance with the provisions of GB/T 228.2.
6.3.3 The test of high-temperature endurance property of the product shall be carried
out according to the provisions of GB/T 2039. During the test, the endurance property
of the TA15 plate shall be tested according to the test time of 50 h, and the arbitration
test shall be carried out according to the test time of 100 h.
6.4 Bending properties
The test of bending properties of the product is carried out in accordance with the
provisions of GB/T 232. For plate and sheet with a thickness greater than 5.0 mm, the
sample can be machined and thinned to not less than 5.0 mm, and the original surface
on one side shall be retained. During the bending test, the retained original surface of
the sample shall be located on the tensile deformation side; the plate with a thickness
not greater than 5.0 mm shall be subjected to the bending test according to the full
section. The width of the sample is 15 mm.
6.5 β transus temperature
The test of β transus temperature of the product shall be carried out according to the
provisions of GB/T 23605.
6.6 Appearance quality
The test of appearance quality of the product shall be carried out by visual inspection.
7 Test rules
7.1 Inspection and acceptance
7.1.1 Products shall be inspected by the supplier or a third party.
7.1.2 The buyer can inspect the received products in accordance with the provisions of
this document. When the inspection result does not conform to the provisions of this
document or the purchase order, it shall be submitted to the supplier in written form,
and the supplier and the buyer shall negotiate and resolve. Objections pertaining to
external dimensions and their allowable deviations and appearance quality shall be
raised within one month from the date of receipt of the product; objections pertaining
to chemical composition, mechanical properties, and bending properties shall be raised
within three months from the date of receipt of the product. If arbitration is required, it
shall be determined by both the supplier and the buyer in the buyer’s joint sampling or
negotiation.
7.2 Batch
Products shall be submitted for acceptance in batches, and each batch shall be composed
of products of the same designation, melting furnace number, specification,
manufacturing method, state and the same heat treatment furnace batch.
7.3 Inspection items
Each batch of products shall be inspected for chemical composition, external
dimensions and their allowable deviations, tensile properties at room temperature,
bending properties and appearance quality. When the buyer has requirements for high-
temperature tensile properties, high-temperature endurance and β transus temperature,
and indicates it in the order form, the high-temperature tensile properties, high-
temperature endurance and β transus temperature of the product shall also be tested.
7.4 Sampling
The sampling of the product shall comply with the requirements of Table 8.
b) designation;
c) specification;
d) state;
e) batch number;
f) number of this document.
8.1.2 Package marking
The package marking of the product shall comply with the provisions of GB/T 8180.
8.2 Packaging, transportation, storage
The packaging, transportation and storage of the product shall comply with the
regulations of GB/T 8180.
8.3 Accompanying documents
Each batch of products shall be accompanied by accompanying documents, which shall
include supplier information, product information, number of this document, date of
manufacture or packaging date, and should also include:
a) quality certificate, which includes the contents as follows:
● product name, designation, specification and state;
● product ingot number, batch number, batch weight and quantity;
● main performance and technical parameters of the product;
● various analysis and inspection results and the seal of the quality inspection
department;
● others.
b) certificate of quality, which includes the contents as follows:
● ingot number or batch number;
● inspection date;
● inspector’s signature or seal;
● others.
c) others.
......
 
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.