YB/T 4635-2017Precision Steel Strip for Retractor Spring of Vehicle Safety-Belts (English PDF)

Foreword

This Standard replaced YB/T 5235-1993 Sealed Iron-Nickel-Chromium, Iron-Nickel

Alloys Technical Requirement.

Compared with YB/T 5235-1993, this Standard has the major changes as follows.

--- Modify the standard name into "Sealed Iron-Nickel-Chromium, Iron-Nickel Alloy

with Permanent Expansion";

--- Add "normative references", "order contents" and "classification and code";

--- Combine the contents of Table 3 in the original standard into the Table 2;

--- Modify the tensile strength of the cold-rolled strip delivered in a hard state from

more than 820MPa to more than 700MPa;

--- Delete the "intrinsic quality" provisions in the original standard;

--- Delete the content of " the texture is caused due to excessive rolling final

deformation rate of the alloy" in "process performance" of the original standard;

--- Delete the content of "the thickness of the tested sample shall be indicated in the

contract; otherwise, the test shall be carried out according to the Shift-A

specimen specified in the GB/T 5778 standard" in the "air tightness" of the

original standard. This content is included in GB/T 14985 standard.

The Appendix A of this Standard is informative.

This Standard was proposed by China Iron and Steel Industry Association.

This Standard shall be under the jurisdiction of National Technical Committee for

Standardization of Steel.

Drafting organizations of this Standard. Shaanxi Precision Alloy Co., Ltd.; and

Shanghai Iron and Steel Research Institute.

Chief drafting staffs of this Standard. Zhang Ailing, and Liu Yongqing.

The historical editions replaced by this Standard are as follows.

--- GBn 103-1981, GBn 103-1987, YB/T 5235-1993.

Sealed Iron-Nickel-Chromium, Iron-Nickel Alloy with

Permanent Expansion

1 Scope

This Standard specifies the size, shape, technical requirements, test methods,

inspection rules, packaging, marking, and quality certificates, etc. of iron-nickel-

chromium 4J6, 4J47, 4J49 alloy and iron-nickel 4J42, 4J45, 4J50 alloy

This Standard is applicable to sealed iron-nickel-chromium and iron-nickel alloy with

permanent expansion matched sealed on electrical components with soft glass or

ceramic.

2 Normative References

The provisions in following documents become the provisions of this Standard through

reference in this Standard. For dated references, the subsequent amendments

(excluding corrigendum) or revisions do not apply to this Standard, however, parties

who reach an agreement based on this Standard are encouraged to study if the latest

versions of these documents are applicable. For undated references, the latest edition

of the referenced document applies.

GB/T 14985 General Rules of Dimensions Shape Surface Quality Testing Method

and Inspection for Expansion Alloys

3 Order Contents

The contract or order placed according to this Standard shall include the following.

4 Classification and Code

According to the delivery status, the alloy may be divided into.

5 Size and Shape

The size, shape and allowable deviation of the alloy materials shall conform to the

relevant provisions of GB/T 14985.

6 Technical Requirements

7 Test Methods

The quality inspection methods of alloy materials shall comply with the relevant

regulations of GB/T 14985.

8 Inspection Rules

The inspection rules for alloy materials shall comply with the relevant regulations of

GB/T 14985.

9 Packaging, Marking and Quality Certificates

The packaging, marking and quality certificate of the finished alloy material shall

comply with the relevant regulations of GB/T 14985.

Appendix A

(Informative)

Typical Expansion Coefficient of Alloy

The typical expansion coefficient of the alloy is shown in Table A.1.

YB/T 5235-2005

FERROUS METALLURGY INDUSTRY STANDARD

ICS 77.140.99

H 58

Replacing YB/T 5235-1993

Sealed Iron-Nickel-Chromium, Iron-Nickel Alloy with

Permanent Expansion

Issued on. JULY 26, 2005

Implemented on. DECEMBER 01, 2005

Issued by. National Development and Reform Commission of PRC

Table of Contents

Foreword... 3

1 Scope... 4

2 Normative References... 4

3 Order Contents... 4

4 Classification and Code... 5

5 Size and Shape... 5

6 Technical Requirements... 5

7 Test Methods... 7

8 Inspection Rules... 7

9 Packaging, Marking and Quality Certificates... 8

Appendix A (Informative) Typical Expansion Coefficient of Alloy... 9

Foreword

This Standard replaced YB/T 5235-1993 Sealed Iron-Nickel-Chromium, Iron-Nickel

Alloys Technical Requirement.

Compared with YB/T 5235-1993, this Standard has the major changes as follows.

--- Modify the standard name into "Sealed Iron-Nickel-Chromium, Iron-Nickel Alloy

with Permanent Expansion";

--- Add "normative references", "order contents" and "classification and code";

--- Combine the contents of Table 3 in the original standard into the Table 2;

--- Modify the tensile strength of the cold-rolled strip delivered in a hard state from

more than 820MPa to more than 700MPa;

--- Delete the "intrinsic quality" provisions in the original standard;

--- Delete the content of " the texture is caused due to excessive rolling final

deformation rate of the alloy" in "process performance" of the original standard;

--- Delete the content of "the thickness of the tested sample shall be indicated in the

contract; otherwise, the test shall be carried out according to the Shift-A

specimen specified in the GB/T 5778 standard" in the "air tightness" of the

original standard. This content is included in GB/T 14985 standard.

The Appendix A of this Standard is informative.

This Standard was proposed by China Iron and Steel Industry Association.

This Standard shall be under the jurisdiction of National Technical Committee for

Standardization of Steel.

Drafting organizations of this Standard. Shaanxi Precision Alloy Co., Ltd.; and

Shanghai Iron and Steel Research Institute.

Chief drafting staffs of this Standard. Zhang Ailing, and Liu Yongqing.

The historical editions replaced by this Standard are as follows.

--- GBn 103-1981, GBn 103-1987, YB/T 5235-1993.

Sealed Iron-Nickel-Chromium, Iron-Nickel Alloy with

Permanent Expansion

1 Scope

This Standard specifies the size, shape, technical requirements, test methods,

inspection rules, packaging, marking, and quality certificates, etc. of iron-nickel-

chromium 4J6, 4J47, 4J49 alloy and iron-nickel 4J42, 4J45, 4J50 alloy

This Standard is applicable to sealed iron-nickel-chromium and iron-nickel alloy with

permanent expansion matched sealed on electrical components with soft glass or

ceramic.

2 Normative References

The provisions in following documents become the provisions of this Standard through

reference in this Standard. For dated references, the subsequent amendments

(excluding corrigendum) or revisions do not apply to this Standard, however, parties

who reach an agreement based on this Standard are encouraged to study if the latest

versions of these documents are applicable. For undated references, the latest edition

of the referenced document applies.

GB/T 14985 General Rules of Dimensions Shape Surface Quality Testing Method

and Inspection for Expansion Alloys

3 Order Contents

The contract or order placed according to this Standard shall include the following.

4 Classification and Code

According to the delivery status, the alloy may be divided into.

5 Size and Shape

The size, shape and allowable deviation of the alloy materials shall conform to the

relevant provisions of GB/T 14985.

6 Technical Requirements

7 Test Methods

The quality inspection methods of alloy materials shall comply with the relevant

regulations of GB/T 14985.

8 Inspection Rules

The inspection rules for alloy materials shall comply with the relevant regulations of

GB/T 14985.

9 Packaging, Marking and Quality Certificates

The packaging, marking and quality certificate of the finished alloy material shall

comply with the relevant regulations of GB/T 14985.

Appendix A

(Informative)

Typical Expansion Coefficient of Alloy

The typical expansion coefficient of the alloy is shown in Table A.1.

......