ASTM A403 Standard specification covers the standard for wrought austenitic stainless steel fittings for pressure piping applications. ASTM A403 / A403M Standard Specification for Wrought Austenitic Stainless Steel Piping Fittings.

ASTM A403 WPL6 Elbow after complete quality and performance measure inspection. These are widely appreciated for excellent quality, corrosion abrasion and high tensile strength with long life service.

The material for fittings shall consist of forgings, bars, plates, or seamless or welded tubular products. Forging or shaping operations shall be performed by hammering, pressing, piercing, extruding, upsetting, rolling, bending, fusion welding, machining, or by a combination of two or more of these operations. All fittings shall undergo heat-treatment. Chemical and product analyses shall be performed and shall conform to the required chemical composition in carbon, manganese, phosphorus, sulfur, silicon, chromium, molybdenum, and titanium. Tension test shall be done on the fitting material to determine the tensile properties such as yield strength and tensile strength. Fittings supplied under this specification shall be examined visually for surface discontinuities, surface checks, and mechanical marks.

This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

ASTM A403標準規範涵蓋了壓力管道應用中鍛造奧氏體不鏽鋼配件的標準。ASTM A403/A403M鍛造奧氏體不鏽鋼管道配件標準規範。

ASTM A403 WPL6彎管在完成質量和性能測量檢查後。這些日皮视频APP下载因其卓越的質量、耐腐蝕磨損和高抗拉強度以及長壽命而受到廣泛讚賞。

配件的材料應由鍛件、棒材、板材或無縫或焊接的管狀日皮视频APP下载組成。鍛造或成形操作應通過錘擊、壓製、穿孔、擠壓、鐓粗、軋製、彎曲、熔焊、機加工或通過兩種或多種操作的組合進行。所有配件應進行熱處理。應進行化學和日皮视频APP下载分析，並應符合碳、錳、磷、硫、矽、鉻、鉬和鈦的所需化學成分。應對配件材料進行拉伸試驗，以確定屈服強度和抗拉強度等拉伸性能。應目視檢查根據本規範提供的配件的表麵不連續性、表麵檢查和機械痕跡。

本摘要是對參考標準的簡要總結。它僅供參考，不是標準的官方部分；使用和應用時必須參考標準本身的全文。ASTM不提供任何明示或暗示的保證，也不表示本摘要的內容是準確、完整或最新的。

Wrought Austenitic Stainless Steel Piping Fittings鍛造奧氏體不鏽鋼管道配件

Materials shall consist of forgings, bars, plates, seamless or fusion welded tubular products with filler metal added, and shall be produced by open-hearth, basic-oxygen, or electric-furnace process. Forging or forming operations shall be performed by one or a combination of two or more of the following procedures: hammering, pressing, piercing, extruding, upsetting, working, bending, fusion-welding, or machining. All welding shall be completed prior to the austenitizing heat treatment, which shall be executed in the normalized, normalized and tempered, annealed, or quenched and tempered conditions. Steel specimens shall conform to required values of chemical composition, tensile strength, yield strength, elongation, wall thickness, and Charpy V-notch impact value. All fusion-welded butt joints shall undergo radiographic examination, while hydrostatic testing of fittings is not required in this specification. Repair welding shall be permissible for parts made to dimensional standards.

材料應由鍛件、棒材、板材、添加了填充金屬的無縫或熔焊管狀日皮视频APP下载組成，並應通過平爐、堿性氧氣或電爐工藝日皮视频网站。鍛造或成形操作應通過以下一種或兩種或多種程序的組合進行：錘擊、壓製、刺穿、擠壓、鐓粗、加工、彎曲、熔焊或機加工。所有焊接應在奧氏體化熱處理之前完成，該熱處理應在正火、正火和回火、退火或淬火和回火條件下進行。鋼試樣應符合化學成分、抗拉強度、屈服強度、伸長率、壁厚和夏比V型缺口衝擊值的要求值。所有熔焊對接接頭應進行射線檢測，而本規範中不要求對配件進行靜水壓試驗。對於按照尺寸標準製造的零件，應允許進行補焊。

What is the ASTM A403?什麽是ASTM A403?

ASTM A403 Stainless Steel Pipe Fittings refers to the material of forged and rolled austenitic stainless fittings for pressure pipes. Common grades are WP304/L, WP316/L. They can be used into many fields as engineering industry, energy conversion plants etc.

ASTM A403 Standard specification covers the standard for wrought austenitic stainless steel fittings for pressure piping applications.

ASTM A403不鏽鋼管件是指壓力管道用鍛造和軋製奧氏體不鏽鋼管件的材料。常見的牌號有WP304/L、WP316/L。它們可用於工程工業、能源轉換廠等許多領域。

ASTM A403標準規範涵蓋了壓力管道應用中鍛造奧氏體不鏽鋼配件的標準。

Chemical Composition (%) of ASTM A403的化學成分（%）

Notes:

For each reduction of 0.01% below the specified C maximum, an increase of 0.06% Mn above the specified maximum will be permitted, up to a maximum of 1.35%.

The sum of Cu, Ni, Cr, and Mo shall not exceed 1.00%.

The sum of Cr and Mo shall not exceed 0.32%.

The maximum carbon equivalent (C.E.) shall be 0.50, based on heat analysis and the formula C.E.=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.

筆記：

對於低於規定C最大值0.01%的每一次減少，將允許高於規定最大值0.06%的Mn增加，最高可達1.35%。

銅、鎳、鉻和鉬的總和不得超過1.00%。

鉻和鉬的總和不得超過0.32%。

根據熱分析和公式C.E.=C+Mn/6+（Cr+Mo+V）/5+（Ni+Cu）/15，最大碳當量（C.E.）應為0.50。

Mechanical properties of ASTM A403的機械性能

Material Furnished to this specification shall conform to the requirements of specifications A960/A960M including any supplementary requirements that are indicates in the purchase order. Failure to company with the common requirements of Specification A960/A960M constitutes non-conformance with this specification . In case of conflict between this specification and Specification A960/A960M , this specification shall prevail.

根據本規範提供的材料應符合規範A960/A960M的要求，包括采購訂單中指明的任何補充要求。不符合規範A960/A960M的共同要求構成不符合本規範。如果本規範與規範A960/A960M之間存在衝突，應以本規範為準。

What grade of steel is ASTM A403?ASTM A403是什麽等級的鋼？

The standard includes several grades of austenitic stainless steel alloys, and uses the WP or CR prefix to mark the grade of steel, depending on the applicable ASTM or MSS size and rated pressure standards. ASTM A403 is designed for forged steel pipe fittings, Cast pipe fittings are not suitable.

該標準包括幾種等級的奧氏體不鏽鋼合金，並使用WP或CR前綴來標記鋼的等級，具體取決於適用的ASTM或MSS尺寸和額定壓力標準。ASTM A403是為鍛鋼管件設計的，鑄造管件不適用。