ASTM A105 steel grade is a typical common material (mild carbon steel) for forged carbon steel flange, it used in a lot of places for ambient and higher-temperature service in pressure systems. This material is durable, cost lower, and difficult to break. In case used in a stainless steel piping system it shall be adapted with a lap joint end ring.

ASTM A105钢级是锻造碳钢法兰的典型常用材料（低碳钢），它在压力系统中用于环境和高温环境。这种材料耐用、成本低、不易断裂。如果用于不锈钢管道系统，则应配备搭接端环。

ASTM A105 covers forged carbon steel flange and piping components for ambient and higher-temperature service in pressure systems. It also includes pipe fittings, valves and similar parts. The maximum weight manufactured forging part follows by this standard is 10000 bounds (4540kg). The larger forgings can according by the standard A 266/A266M. This specification do not covers tube sheets and hollow cylindrical forgings for pressure vessel shells .

This specification does not covers raw material which round bar and seamless tubular produced piping components.

ASTM A105涵盖了压力系统中用于环境和高温环境的锻造碳钢法兰和管道部件。它还包括管件、阀门和类似零件。根据本标准制造的锻件最大重量为10000磅（4540kg）。较大的锻件可以符合标准A 266/A266M。本规范不包括压力容器壳体的管板和空心圆柱形锻件。

本规范不包括圆钢和无缝钢管草莓视频在线观看视频管道部件的原材料。

Referenced documents参考文件

The following list of standard apply to these specification:以下标准列表适用于这些规范：

ASTM standards:ASTM标准：

• A266/A266M Specification for carbon steel forgings for pressure vessel components.压力容器部件用碳钢锻件规范。
• A675/A675M Specification for hot-rolled, special quality and mechanical properties, carbon steel bars.碳素钢热轧特殊质量和机械性能规范。
• A696 Specification for steel bars, carbon, hot-rolled or cold-finished,special quality, for pressure piping components.压力管道部件用特殊质量热轧或冷加工碳素钢棒规范。
• A788/A788M Specification for steel forgings, general requirements.钢锻件规范，一般要求。
• A961/961M general requirements for steel flange, forging fittings, valve and parts for piping applications.管道应用钢法兰、锻造配件、阀门和零件的一般要求。

MSS standard:MSS标准：

• SP44 Standard for steel pipe line flanges钢管法兰标准

ASME Standard:ASME标准：

• B16.5 Dimensional standard for steel pipe flanges and flanges fittings钢管法兰和法兰配件的尺寸标准
• B16.9 Wrought steel butt-welding fittings锻钢对焊配件
• B16.10 Face-to-face and end-to-end dimensions of ferrous valves铁质阀门的面对面和端到端尺寸
• B16.11 Forged steel fittings, socket weld and threaded锻钢配件，承插焊和螺纹
• B16.34 Valves connect by flanges, threaded and welding end阀门通过法兰、螺纹和焊接端连接
• B16.47 Large diameter steel flanges大直径钢法兰
• ASME boiler and pressure vessel code:锅炉和压力容器规范：

API standard:API标准：

• API-600 Flanged and butt-Welding-end steel gate valves法兰和对接焊接端钢制闸阀
• API-602 Compact design carbon steel gate valves for refinery use精炼厂用紧凑型设计碳钢闸阀

Chemical requirements ASTM A105化学要求

Mechanical Properties ASTM A105机械性能

1. The sum of copper, nickel, chromium, molybdenum and vanadium shall not exceed 1.00%.
   (2) The sum of chromium and molybdenum shall not exceed 0.32%.

（1） 铜、镍、铬、钼和钒的总和不得超过1.00%。

（2） 铬和钼的总和不得超过0.32%。

Note..注意
For each reduction of 0.01% below the specified carbon maximum (0.35%), an increase of 0.06% manganese above the specified maximum (1.05%) will be permitted up to a maximum of 1.35%.对于低于规定碳最大值（0.35%）的每0.01%的减少，允许锰比规定最大值（1.05%）增加0.06%，最高可达1.35%。

Terminology术语
For definitions of other terms used in this specification, find in specification A961/A961M.本规范中使用的其他术语的定义见规范A961/A961M。

Ordering information订购信息
See specification A961/A961M.见规范A961/A961M。

General requirements一般要求
If conflict between the requirements of this specification and Specification A961/A961M. Comply with this specification.

如果本规范的要求与规范A961/A961M之间存在冲突。遵守本规范。

Heat treatment热处理
Heat treatment is not required except for flanges above Class 300, flanges of special design where the design pressure or design temperature are not known and for items over 4″ NPS and above Class 300. When heat treatment is required, annealing, normalizing, Normalize and temper, normalize and quench and tempering shall be the applied methods.

除300级以上法兰、设计压力或设计温度未知的特殊设计法兰以及4〃NPS以上300级以上的项目外，不需要进行热处理。当需要热处理时，应采用退火、正火、正火回火、正火淬火回火等方法。

Welding
These components can be welded. Welding procedures must comply with ASME Boiler and Pressure Vessel Code Section IX.

焊接

这些部件可以焊接。焊接程序必须符合ASME锅炉和压力容器规范第九节。

Forging
ASTM A105 carbon steel can be forged at temperatures in the range of 2200 to 1700 F followed by quenching and tempering or normalizing.

锻造

ASTM A105碳钢可以在2200至1700华氏度的温度下锻造，然后淬火和回火或正火。

Annealing
Forged parts can be cooled to below 1000 degrees Fahrenheit and then heated to between 1550 degrees Fahrenheit and 1,700 degrees Fahrenheit. Then carry out slow furnace cooling.

退火处理

锻造零件可以冷却到1000华氏度以下，然后加热到1550华氏度到1700华氏度之间。然后进行缓慢的炉内冷却。

Hydro-static Test
Hydro-static Test shall be conducted by the forging manufacture only when Supplemental S57 of ASTM A961 is specified.

静水压试验

只有在规定了ASTM A961的补充S57时，锻件制造商才应进行静水压试验。

ASTM A105 flangeASTM A105法兰

ASTM A105 Flange is a specification of flanges. The specification can include different grades of stainless steel material made flanges. The flanges are of forged carbon steel and are meant for high temperature services.

ASTM A105法兰是法兰规范。该规范可以包括不同等级的不锈钢材料制成的法兰。法兰由锻造碳钢制成，适用于高温环境。

ASTM A105 Flange is a forged carbon steel piping component designed for use in pressure systems at high temperatures. These flanges are widely used in industries like petrochemical, oil & gas, and power generation.

ASTM A105法兰是一种锻造碳钢管道部件，设计用于高温下的压力系统。这些法兰广泛应用于石化、石油天然气和发电等行业。

Features特征

• Material: Made from carbon steel, A105 flanges provide excellent mechanical properties such as tensile strength and toughness.
• Forging Process: These flanges are produced through forging, resulting in stronger and more reliable products compared to casting.
• Operating Conditions: Suitable for high-pressure and high-temperature environments (up to approximately 450°C).
• Common Types: Available in types like Weld Neck, Slip-On, Blind, Socket Weld, and Threaded Flanges.

·材料：A105法兰由碳钢制成，具有优异的机械性能，如抗拉强度和韧性。

·锻造工艺：这些法兰是通过锻造草莓视频在线观看视频的，与铸造相比，草莓视频下载色更坚固、更可靠。

·操作条件：适用于高压和高温环境（高达约450°C）。

·常见类型：有焊颈、滑套、盲板、承插焊和螺纹法兰等类型。

Advantages优势

• High Strength: Forged construction offers superior mechanical strength for critical applications.
• Corrosion Resistance: Carbon steel offers adequate resistance with appropriate coatings and treatments.
• Cost-Effective: A105 flanges are more affordable compared to alloy or stainless steel options.
• Wide Availability: Available in various sizes and pressure ratings, suitable for diverse applications.

·高强度：锻造结构为关键应用提供了卓越的机械强度。

·耐腐蚀性：碳钢通过适当的涂层和处理提供足够的耐腐蚀性。

·经济高效：与合金或不锈钢选项相比，A105法兰更实惠。

·广泛可用性：提供各种尺寸和压力等级，适用于各种应用。

Applications应用

• Oil and Gas Industry: Used in pipelines and pressure vessels.
• Petrochemical Industry: Handles fluids and gases under high pressure and temperature.
• Power Plants: Employed in pressure systems such as boilers and heat exchangers.
• Chemical Industry: Suitable for corrosive chemicals and high-pressure applications.
• Water Treatment: Used in high-pressure water treatment plants.

·石油和天然气工业：用于管道和压力容器。

·石油化工：处理高压高温下的流体和气体。

·发电厂：用于锅炉和热交换器等压力系统。

·化学工业：适用于腐蚀性化学品和高压应用。

·水处理：用于高压水处理厂。

ASTM A105 flanges are versatile and essential components for high-pressure systems in industries like petrochemical, oil & gas, and power generation. With their carbon steel construction, they offer excellent mechanical properties, making them suitable for high-temperature and high-pressure environments. These flanges are available in multiple configurations, providing reliable and cost-effective solutions for industrial applications.

ASTM A105法兰是石化、石油和天然气以及发电等行业高压系统的通用和基本部件。凭借其碳钢结构，它们具有优异的机械性能，使其适用于高温高压环境。这些法兰有多种配置，为工业应用提供可靠且经济高效的解决方案。