{"id":9261,"date":"2025-09-28T02:21:05","date_gmt":"2025-09-28T02:21:05","guid":{"rendered":"https:\/\/premiumalu.com\/?post_type=product&p=9261"},"modified":"2026-07-08T15:01:13","modified_gmt":"2026-07-08T15:01:13","slug":"a357-aluminium-gietlegering","status":"publish","type":"product","link":"https:\/\/premiumalu.com\/nl\/product\/a357-aluminium-gietlegering\/","title":{"rendered":"A357 aluminium giet Alloy"},"content":{"rendered":"

What Is A357 Aluminum Casting Alloy?<\/h2>\n

Linsy A357 is a premium aluminum-silicon-magnesium casting alloy known for its outstanding combination of high strength, excellent weldability, and superior pressure tightness. Its fine microstructure and low iron content minimize porosity and deliver high integrity in thin-walled, highly stressed castings. Commonly supplied in the T6 temper, A357 is a preferred choice for aerospace and high-performance automotive components where fatigue resistance matters.<\/p>\n

Available A357 Aluminum Products<\/h2>\n

Linsy supplies A357 in the forms most useful for foundries and component buyers. Standard and custom dimensions are available; contact our team for non-listed sizes.<\/p>\n\n\n\n\n\n\n\n\n\n
Form<\/th>\nTypical Size \/ Specification<\/th>\nCommon Use<\/th>\n<\/tr>\n<\/thead>\n
Ingot<\/td>\nStandard ingot weights; remelt stock<\/td>\nFoundry remelting<\/td>\n<\/tr>\n
Die casting<\/td>\nPer drawing; wall 1.5\u20138 mm<\/td>\nComplex thin-wall parts<\/td>\n<\/tr>\n
Sand casting<\/td>\nUp to ~600 mm envelope<\/td>\nAerospace \/ pump housings<\/td>\n<\/tr>\n
Permanent-mold casting<\/td>\nPer drawing<\/td>\nStructural components<\/td>\n<\/tr>\n
CNC-machined casting<\/td>\nTolerances per ISO 2768<\/td>\nFinished parts<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

A357 Specifications & Equivalent Designations<\/h2>\n

The tables below list the alloy’s common commercial and standard designations. Cross-references follow widely used naming systems; verify the exact designation required for your target market.<\/p>\n\n\n\n\n\n\n\n\n
System<\/th>\nDesignation<\/th>\n<\/tr>\n<\/thead>\n
Former \/ trade style<\/td>\nA357<\/td>\n<\/tr>\n
AA (Aluminum Association)<\/td>\nA357<\/td>\n<\/tr>\n
EN<\/td>\nEN AC- series (market dependent)<\/td>\n<\/tr>\n
ASTM<\/td>\nASTM B26 \/ B85 (castings), B179 (ingot)<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Chemical Composition of A357 Aluminum<\/h2>\n

Composition limits below follow common casting-alloy standards. Values are weight percent, balance aluminum. Confirm exact limits against your required specification.<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Element<\/th>\nContent (wt.%)<\/th>\n<\/tr>\n<\/thead>\n
Si<\/td>\n6.5\u20137.5<\/td>\n<\/tr>\n
Fe<\/td>\n0.15 max<\/td>\n<\/tr>\n
Cu<\/td>\n0.10 max<\/td>\n<\/tr>\n
Mn<\/td>\n0.10 max<\/td>\n<\/tr>\n
Mg<\/td>\n0.45\u20130.70<\/td>\n<\/tr>\n
Ti<\/td>\n0.10\u20130.20<\/td>\n<\/tr>\n
Be<\/td>\n0.04\u20130.07 (grain refiner)<\/td>\n<\/tr>\n
Sr<\/td>\n0.02\u20130.04 (modifier, optional)<\/td>\n<\/tr>\n
Zn<\/td>\n0.05 max<\/td>\n<\/tr>\n
Others, each<\/td>\n0.03 max<\/td>\n<\/tr>\n
Others, total<\/td>\n0.10 max<\/td>\n<\/tr>\n
Al<\/td>\nRemainder<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Mechanical Properties by Temper<\/h2>\n

The values below are typical room-temperature properties for the indicated condition and should be confirmed against mill test data for your specific casting and heat treatment. Casting method, section thickness, and cooling rate affect results.<\/p>\n\n\n\n\n\n\n
Temper<\/th>\nTensile Strength (MPa)<\/th>\nYield Strength (MPa)<\/th>\nElongation (%)<\/th>\n<\/tr>\n<\/thead>\n
T6<\/td>\n310\u2013330<\/td>\n245\u2013265<\/td>\n3.5\u20135.0<\/td>\n<\/tr>\n
T5<\/td>\n240\u2013290<\/td>\n180\u2013220<\/td>\n3.0\u20135.0<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Temper Selection Guide<\/h2>\n

Choose the temper based on your priority between strength, ductility, and dimensional stability:<\/p>\n\n\n\n\n\n\n
Temper<\/th>\nWhen to Use<\/th>\n<\/tr>\n<\/thead>\n
T6<\/td>\nSolution heat treated and artificially aged. Highest strength and fatigue resistance; use for highly stressed structural castings.<\/td>\n<\/tr>\n
T5<\/td>\nArtificially aged only (no solution treatment). Improved strength with lower cost and distortion than T6.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

Key Characteristics of A357 Aluminum<\/h2>\n

High Strength-to-Weight<\/h3>\n

A357-T6 delivers among the highest strengths available in a cast Al-Si-Mg alloy, suitable for structural aerospace and automotive parts.<\/p>\n

Excellent Pressure Tightness<\/h3>\n

Low iron and fine microstructure reduce porosity, making A357 ideal for impellers, pump bodies, and housings under pressure.<\/p>\n

Weldability & Fatigue<\/h3>\n

Good weldability combined with high fatigue strength supports fabricated and dynamically loaded assemblies.<\/p>\n

Common Applications<\/h2>\n