YB/T 5059-2013Cold-roll low carbon steel strips (English PDF)

Foreword

This standard was drafted according to the rules given in GB/T 1.1-2009.

This standard replaces YB/T 5241-2005 "Iron-nickel and iron-nickel-cobalt alloys with

low expansion".

Compared with YB/T 5241-2005, the main changes of this standard are as follows:

- ADD the composition and related properties of the alloy designation 4J32A;

- USE "flat" to replace "plate" in "Scope" and "Delivery state";

- ADD the normative references;

- ADD the delivery state "cold drawn (WCD)" in the classification and code,

subdividing the hot rolled (forged) state into: "hot rolled (WHR)", "hot forged

(WHF)";

- MODIFY the "air tightness" requirements;

- ADD the "non-destructive testing";

- ADD the "special requirements";

- ADD the test method table 3;

- MODIFY the re-inspection and judgment rules.

This standard replaces YB/T 5241-2005 from the date of implementation.

This standard was proposed by the China Iron and Steel Association.

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

Steel Standardization (SAC/TC 183).

The drafting organizations of this standard: General Iron and Steel Research Institute,

Metallurgical Industry Information Standards Research Institute.

1 Scope

This standard specifies the dimensions, shapes, technical requirements, test methods,

inspection rules, packaging, marking, quality certificates of iron-nickel 4J36 alloy, free-

cutting 4J38 alloy, iron-nickel-cobalt 4J32, 4J32A, 4J40 alloy bars, strips, flats, wires,

tubes.

This standard applies to iron-nickel and iron-nickel-cobalt alloys with low expansion

for making instrument parts, which have high precision requirements and

approximately constant dimensions within a certain range of ambient temperature

changes.

2 Normative references

The following documents are essential to the application of this document. For the dated

documents, only the versions with the dates indicated are applicable to this document;

for the undated documents, only the latest version (including all the amendments) is

applicable to this standard.

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 223.18 Methods for chemical analysis of iron steel and alloy - The sodium

thiosulfate separation iodometric method for the determination of copper content

GB/T 223.19 Methods for chemical analysis of iron, steel and alloy - The

neocuproine-chloroform extraction photometric method for the determination of

copper content

GB/T 223.20 Methods for chemical analysis of iron steel and alloy - The

Potentiometric titration method for the determination of cobalt content

GB/T 223.21 Methods for chemical analysis of iron steel and alloy - The 5-CL-

PADAB spectrophotometric method for the determination of cobalt 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 223.25 Methods for chemical analysis of iron, steel and alloy - The

GB/T 5777 Seamless steel pipe and tubing methods for ultrasonic testing

GB/T 6394 Metal - Methods for estimating the average grain size

GB/T 8651 Metal plates - Flaw detection method by the ultrasonic plate wave

GB/T 14985-2007 General rules of dimensions, shape, surface, quality, testing

method and inspection for expansion alloys

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)

YB/T 5242 General rules of packaging, marking and quality certification for

precision alloys

YB/T 5321-2006 Determination of hermeticity of expansion alloys

3 Ordering content

The contract or order for ordering according to this standard shall include the following

contents:

a) Standard number;

b) Product name;

c) Designation;

d) Delivery weight or quantity;

e) Dimensions;

f) Delivery state;

g) Non-destructive testing method and qualified level (see 6.10);

h) Special requirements.

4 Classification and code

Alloys are classified as follows according to the delivery state:

Soft state S;

9 Packaging, marking, quality certificate

The packaging, marking, quality certificate of finished alloy materials shall comply

with the relevant provisions of YB/T 5242.

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