CN104197105A

CN104197105A - Stainless steel pipe

Info

Publication number: CN104197105A
Application number: CN201410432040.3A
Authority: CN
Inventors: 陈仲伟; 郭丽萍
Original assignee: ANHUI ZHONGCHEN MECHANICAL AND ELECTRICAL EQUIPMENT Co Ltd
Current assignee: ANHUI ZHONGCHEN MECHANICAL AND ELECTRICAL EQUIPMENT Co Ltd
Priority date: 2014-08-28
Filing date: 2014-08-28
Publication date: 2014-12-10

Abstract

The invention discloses a stainless steel pipe. The stainless steel pipe comprises, by weight, 0.015%-0.04% of C, 0.2%-0.5% of Si, 1%-1.5% of Mn, 16%-21% of Cr, 0.08%-0.12% of N, 0.03%-0.06% of Co, 3%-7.8% of Ni, less than 0.035% of P, less than 0.020% of S, and the balance Fe and other inevitable impurities. N, Ni, Cr and the other elements are added in the stainless steel pipe, the steel pipe has the advantages of being resistant to corrosion and high in strength, and the comprehensive mechanical property of the steel pipe is improved by reasonably controlling the temperature of heat treatment.

Description

A kind of stainless-steel pipe

Technical field

The invention belongs to alloy field, specifically a kind of stainless-steel pipe.

Background technique

Steel pipe is not only for delivery of fluid and powdery solid, exchange heat energy, manufacturing machine part and container, it or a kind of economic steel.From people's daily apparatus, furniture, water supply and sewage, air feed, ventilation and heating facility to the manufacture of various agricultural machinery apparatus, the exploitation of underground resources, national defence and space flight firearms used, bullet, guided missile, rocket etc. all be unable to do without steel pipe.

Stainless steel is a kind of special, have both features of function and structure concurrently, with the premium properties of the uniquenesses such as its stainless, anti-corrosion, heat-resisting, low temperature resistant, easy processing, recoverable, exquisite appearance, Life cycle or cost are low, be widely used in industry and civilian various fields.The whole world stainless steel amount of expending is also to increase year by year.

The mechanical properties such as the stainless steel of prior art is expensive, and cost is higher, intensity are good not.

Summary of the invention

The object of the invention is to prior art defect, a kind of stainless-steel pipe is provided.

Object of the present invention can be achieved through the following technical solutions:

A stainless-steel pipe, is characterized in that, according to quality percentage composition meter, contain C:0.015-0.04%, Si:0.2-0.5%, Mn:1-1.5%, Cr:16-21%, N:0.08-0.12%, Co:0.03-0.06%, Ni:3-7.8%, below P:0.035%, below S:0.020%, all the other are Fe and inevitable impurity.

According to quality percentage composition meter, contain C:0.02-0.035%, Si:0.3-0.45%, Mn:1-1.5%, Cr:18-20%, N:0.08-0.12%, Co:0.03-0.06%, Ni:4-6.5%, below P:0.035%, below S:0.020%, all the other are Fe and inevitable impurity.

According to quality percentage composition meter, also contain at least one being selected from Cu:0.2-0.4%, Pd:0.008-0.036%.

Beneficial effect of the present invention: stainless-steel pipe of the present invention adds by adding the elements such as N, Ni, Cr, and this steel pipe also has the feature corrosion-resistant, intensity is high, by reasonable control heat treatment temperature, has improved the comprehensive mechanical property of steel pipe.

Embodiment

Embodiment 1

A stainless-steel pipe, according to quality percentage composition meter, contains C:0.015%, Si:0.3%, and Mn:1.5%, Cr:16%, N:0.12%, Co:0.05%, Ni:4.5%, P:0.015%, S:0.013%, all the other are Fe and inevitable impurity.

Embodiment 2

A stainless-steel pipe, according to quality percentage composition meter, contains C:0.04%, Si:0.5%, and Mn:1.3%, Cr:21%, N:0.09%, Co:0.038%, Ni:5.1%, P:0.03%, S:0.007%, all the other are Fe and inevitable impurity.

Embodiment 3

A stainless-steel pipe, according to quality percentage composition meter, contains C:0.033%, Si:0.25%, and Mn:1.1%, Cr:17%, N:0.11%, Co:0.06%, Ni:3.8%, P:0.02%, S:0.020%, all the other are Fe and inevitable impurity.

Embodiment 4

A stainless-steel pipe, according to quality percentage composition meter, contains C:0.036%, Si:0.2%, and Mn:1%, Cr:18%, N:0.083%, Co:0.046%, Ni:3%, P:0.005%, S:0.002%, all the other are Fe and inevitable impurity.

Embodiment 5

A stainless-steel pipe, according to quality percentage composition meter, contains C:0.024%, Si:0.4%, and Mn:1.4%, Cr:19%, N:0.12%, Co:0.05%, Ni:7.8%, P:0.031%, S:0.01%, all the other are Fe and inevitable impurity.

Embodiment 6

A stainless-steel pipe, according to quality percentage composition meter, contains C:0.016%, Si:0.25%, and Mn:1.2%, Cr:20%, N:0.11%, Co:0.055%, Ni:6.5%, P:0.027%, S:0.005%, all the other are Fe and inevitable impurity.

Above content is only to structure example of the present invention and explanation; affiliated those skilled in the art make various modifications to described specific embodiment or supplement or adopt similar mode to substitute; only otherwise depart from the structure of invention or surmount this scope as defined in the claims, all should belong to protection scope of the present invention.

Claims

1. a stainless-steel pipe, is characterized in that, according to quality percentage composition meter, contain C:0.015-0.04%, Si:0.2-0.5%, Mn:1-1.5%, Cr:16-21%, N:0.08-0.12%, Co:0.03-0.06%, Ni:3-7.8%, below P:0.035%, below S:0.020%, all the other are Fe and inevitable impurity.

2. stainless-steel pipe according to claim 1, is characterized in that, according to quality percentage composition meter, contain C:0.02-0.035%, Si:0.3-0.45%, Mn:1-1.5%, Cr:18-20%, N:0.08-0.12%, Co:0.03-0.06%, Ni:4-6.5%, below P:0.035%, below S:0.020%, all the other are Fe and inevitable impurity.

3. stainless-steel pipe according to claim 1 and 2, is characterized in that, according to quality percentage composition meter, also contains at least one being selected from Cu:0.2-0.4%, Pd:0.008-0.036%.