ASTM A519 Standard Specification for Seamless Carbon and Alloy Steel Mechanical Tubing.

ASTM A519無縫碳素鋼和合金鋼機械管標準規範。
ASTM A519 specification covers for several grades of carbon and alloy steel mechanical tubing, either hot-finished or cold-finished. The steel used in the mechanical tubing may be cast in ingots or may be strand cast. When steel of different grades is sequentially strand cast, identification of the resultant transition material is required. The seamless tubing is a tubular product made without a welded seam. It is usually manufactured by hot working steel, and if necessary, by subsequently cold finishing the hot-worked tubular product to produce the desired shape, dimensions and properties. The tubes shall be furnished in the following shapes: round, square, rectangular and special sections. Heat analysis shall be made to determine the percentages of the elements specified. If secondary melting processes are used, the heat analysis shall be obtained from one remelted ingot or the product of one remelted ingot of each primary melt. The tubing shall be coated with a film of oil before shaping to retard rust when specified

ASTM A519規範涵蓋了幾種等級的碳鋼和合金鋼機械管，無論是熱加工還是冷加工。機械管中使用的鋼可以鑄造成錠，也可以是鑄坯。當不同等級的鋼按順序鑄坯時，需要對所得過渡材料進行標識。無縫管是一種沒有焊縫的管狀日皮视频APP下载。它通常由熱加工鋼製成，如有必要，隨後對熱加工的管狀日皮视频APP下载進行冷加工，以產生所需的形狀、尺寸和性能。管子應提供以下形狀：圓形、方形、矩形和特殊截麵。應進行熱分析，以確定規定元素的百分比。如果使用二次熔煉工藝，則應從每個一次熔體的一個重熔錠或一個重熔鋼錠的日皮视频APP下载中獲得熱分析。在規定的情況下，管子在成型前應塗上一層油，以延緩生鏽

What is ASTM A519?  ASTM A519是什麽？

ASTM A519 covers several grades of carbon and alloy steel seamless mechanical tubing. The standard is also acceptable in the manufacture of piping. It is manufactured by hot working and then cold finishing the steel into round, square, rectangle or special shapes.

ASTM A519涵蓋了幾種等級的碳鋼和合金鋼無縫機械管。該標準在管道製造中也是可接受的。它是通過熱加工，然後將鋼冷加工成圓形、方形、矩形或特殊形狀而製成的。

Scope範圍

ASTM A519 specification covers several frades of carbon and alloy steel seamless mechanical tubing.

ASTM A519規範涵蓋了碳鋼和合金鋼無縫機械管的幾種框架。

1. 1. The frades anr listed in Tables 1, 2, and 3. When welding is used for joining the weldable mechanical tube grades, the welding procedure shall be suitable for the frade, the condition of the components, and the intended service.

1.1表1、2和3中列出了壓裂液。當焊接用於連接可焊接的機械管等級時，焊接工藝應適用於框架、部件狀況和預期用途。

1. 2. This specification covers both seamless hot-finished emchanical tubing and seamless cold-finished mechanical tubing in sizes up to and including 12 3/4 in.(322.8mm) outside diameter of rround tubes with wall thicknesses as required.

1.2本規範涵蓋了無縫熱加工電磁管和無縫冷加工機械管，尺寸最大為12 3/4英寸（322.8mm）外徑，壁厚符合要求。

1. 3. The tubes shall be furnished in the following shapes, as specified by the purchaser:round, square, rectagular, and special sections.

1.3管子應按買方規定的以下形狀提供：圓形、方形、矩形和特殊截麵。

1. 4. Supplementary requirements of an optional nature are provided and when desired shall be so stated in the order.

1.4提供了可選性質的補充要求，如有需要，應在訂單中注明。

Reference documents參考文件

• ASTM A370 Standard Test Methods and Definitions for Mechanical Testing of Steel Products.·
• ASTM A370鋼製品機械試驗的標準試驗方法和定義。
• ASTM A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products.·
• ASTM A751鋼製品化學分析的試驗方法、規程和術語。
• ASTM A1040 Guide for Specifying Harmonized Standard Grade Compositions for Wrought Carbon, Low-Alloy, and Alloy Steels.
• ASTM A1040《鍛造碳鋼、低合金鋼和合金鋼協調標準等級成分指定指南》。
• ASTM A1058 Test Methods for Mechanical Testing of Steel Products – Metric.·
• ASTM A1058鋼製品機械試驗方法——公製。

Related ASTM A519相關ASTM A519

• ASTM A519 4130 Seamless Pipe·ASTM A519 4130無縫管
• ASTM A519 SAE 1026 Seamless Tubing·ASTM A519 SAE 1026無縫管

• ASTM A519 carbon and alloy steel mechanical tubing·ASTM A519碳鋼和合金鋼機械管
• ASTM A519 AISI 4140 Tubes·ASTM A519 AISI 4140管材

Note:

• DN — Nominal Diamete  rDN——公稱直徑
• NPS —Nominal Pipe Size·NPS——公稱管道尺寸

Chemical composition (%) of ASTM A519  ASTM A519的化學成分（%）

Mechanical Properties of ASTM A519  ASTM A519的機械性能

What is the strength of ASTM A519? ASTM A519的強度是多少？

ASTM A519 Grade 1026 Seamless Tubes Designation 4130 Tensile/ Mechanical Properties: Hot Rolled Ultimate Strength 90 ksi, 621 Mpa, Yield Strength 70 ksi, 483 Mpa and hardness 89. Stress Relieved Ultimate Strength 105 ksi, 724 Mpa, Yield Strength 85 ksi, 586 Mpa and hardness 95.

ASTM A519 1026級無縫管牌號4130拉伸/機械性能：熱軋極限強度90ksi，621Mpa，屈服強度70ksi，483Mpa，硬度89。應力釋放極限強度105ksi，724Mpa，屈服強度85ksi，586Mpa，硬度95。

ASTM A519 seamless carbon steel precision mechanical tubing  ASTM A519無縫碳鋼精密機械管

ASTM A519 seamless carbon steel precision mechanical tubing finds applications in various industries, including automotive, machinery, construction, and transportation. It is commonly used for the production of components such as bushings, bearings, cylinders, and shafts.

ASTM A519無縫碳鋼精密機械管在汽車、機械、建築和運輸等各個行業都有應用。它通常用於日皮视频网站襯套、軸承、氣缸和軸等部件。