Effect of Cr-N Microalloy Content and Normalizing on Yield Strength of Seamless Steel Tube for Mn Series Gas Cylinder

李诗斌; 童立芬; 姚忠; 李刚; 闫庆涛

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Effect of Cr-N Microalloy Content and Normalizing on Yield Strength of Seamless Steel Tube for Mn Series Gas Cylinder

更新时间：2026-01-21

- Effect of Cr-N Microalloy Content and Normalizing on Yield Strength of Seamless Steel Tube for Mn Series Gas Cylinder
- Special Steel Vol. 41, Issue 2, Pages: 66-68(2020)
- 作者机构：
  
  1. 承德建龙特殊钢有限公司研发处
  2. 河北省锻造用钢工程技术研究中心,承德,067201
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Received：13 November 2019，
  
  Online First：22 April 2022，
  
  Published：22 April 2020
- 稿件说明：
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李诗斌, 童立芬, 姚忠, et al. Effect of Cr-N Microalloy Content and Normalizing on Yield Strength of Seamless Steel Tube for Mn Series Gas Cylinder[J]. Special Steel, 2020, 41(2): 66-68.
DOI：

李诗斌, 童立芬, 姚忠, et al. Effect of Cr-N Microalloy Content and Normalizing on Yield Strength of Seamless Steel Tube for Mn Series Gas Cylinder[J]. Special Steel, 2020, 41(2): 66-68. DOI：

摘要

常见的医用气瓶、工业气瓶主要材质为37Mn类Mn系气瓶钢。气瓶钢主要采用正火热处理工艺

但正火态37Mn钢材质的气瓶力学性能不稳定

屈服强度及冲击功达不到标准设定要求。通过加入Cr、N等微量元素的微合金化37Mn钢化学成分为/%:0.34～0.38C

0.20～0.27Si

1.60～1.70 Mn

0.10～0.20 Cr

0.0040～0.0090N

经正火轧制的Φ219mm×6mm钢管屈服强度≥530MPa

抗拉强度≥750 MPa

冲击功≥13.2J

完全能满足客户使用需求。

Abstract

The main material of common medical and industrial gas cylinders is 37Mn steel of Mn series. Normalizing treatment is mainly adopted for cylinder steel. However

the mechanical properties of normalized 37Mn cylinder steel are unstable

and it yield strength and impact energy cannot meet setting in standards. In this paper

by adding Cr and N micro elements

the chemical composition of microalloying 37Mn steel is /% ：0.34 ~0.38 C

0.20 ~0.27 Si

1.60 〜1.70 Mn

0.10 ~0.20 Cr

0.004 0 ~0.0090N

of normalized rolled;219mm x6mm steel tube

the yield strength≥530 MPa

tensile ≥750 MPa and impact energy 13.2J

fully meet the needs of customer.

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