December 1, 2018

Carbon Steel A27 GR 70-36

Grade 70-36[485-250] (UNS Code: J03501) is covered by ASTM A27 standard, it’s a good carbon steel for casting purpose.

ASTM A27 / A27M – 17 Standard Specification for Steel Castings, Carbon, for General Application

Grade 70-36[485-250] (J03501) Casting Chemical Requirements and Mechanical Property:
Carbon: 0.35max
Manganese: 0.70 max
Silicon: 0.80 max
Sulfur: 0.06 max
Phosphorus: 0.05 max
For each reduction of 0.01 % carbon below the maximum specified, an increase of 0.04 % manganese above the maximum specified will be permitted to a maximum

Tensile Strength: 70ksi(485Mpa) min
Yield Strength: 36ksi (250Mpa) min
Elongation in 2in. or 50mm: 22.0% min
Reduction of Area: 30% min

Heat treatment process: generally all Grade 70-36[485-250] (J03501) castings should be heat-treated by full annealing, normalizing, normalizing and tempering, or quenching and tempering

Manufacture Process: Sand Casting, Precision Lost Wax Investment Casting.

Our Services

  1. 1
    Sand Casting

    Casting Quality focus on Metal Parts industry, we provide professional service in Metal Casting field.

    Sand Casting is a popular metal form method, are suitable for all materiel, such as grey iron, ductile iron, malleable iron, carbon steel, stainless steel, aluminum and bronze.

  2. 2
    Investment Casting

    Also named as precision lost wax casting, mainly suitalbe for carbon steel and stainless steel parts. We also provide grey iron and ductile iron and aluminum and bronze parts and Titanium alloy by investment casting. It can achieve the best appearance with good tolerance

  3. 3
    Shell Casting

    Shell casting method is a good option to replace investment casting and sand casting. the quality is better than sand casting parts, suitable for bulk production.

  4. 4
    CNC Machining

    CNC Milling, CNC Turning with 5 axis CNC center, we provide precision machining for all castings based on customers design drawings.

  5. 5
    CAD/CAM Design

    Mechanical Design service based on customers requirement, our software is Solidworks and AutoCAD.

  6. 6
    Tools/Molds Design

    Mould design and production will be served for metal casting ad plastic injection industry.  Based on our more than 10 years experience, we supply professional molds for our customers in Europe and North American.

  7. 7
    Rapid Prototyping.

    3D Printing and Rapid Prototyping service.

    3D Scanning by physical sample.


What makes Casting Quality the best?


Our engineers are more than just designers….they’re pioneers. Our team use CAD/CAM to do the simulation of casting parts .Through the advanced technology, we can know the weight and structure . We also visited so many factories to know their difference and improve our products every year.


We’re obsessed with quality. Casting Quality constantly strives to exceed our customers’ expectations in durability and performance. In fact, we will control the whole process from the original material to the finished parts , include the technology .Uniquely-designed Quality Control System focuses on ensuring four product goals: 1) Eligible Chemistry , 2) Hardness 3) Property and 4) Affordable Pricing. The result is the best casting products value in the industry.


We’re in Qingdao,China, It has convenient transportation of road and sea. Courteous service is part of who we are, and we do it better than anyone in the industry. With Casting Quality you can expect friendly, knowledgeable, and prompt customer service.


Shipping orders complete and on-time is of paramount importance to our customers. We will count the delivery date and result before accept your order.  Casting Quality consistently ranks as one of the best in speed of delivery and fill rates.

Metal Castings

Stainless Steel Ring Gear Casting

Star ring gear require precision gear teeth, investment casting is a good process to get a precision tolerance gear castings, its metal can be stainles steel casting or carbon steel casting or alloy steel casting.

Stainless Steel Trolley Casting

Stainless steel Trolley is made by precision investment casting (Water glass) process, it can be very precision dimension without any machining. All castings will be inspected by special tools as buyers requirement.

Hardware Fitting Casting

Hardware fittings casting made by investment casting, the materiel can be carbon steel or stainless steel. Door Hinge and others.

Stainless Steel Pump Head

Stainless Steel Pump Head, Pump Housing, Pump casing, made by precision investment casting with CNC machining.

Ball Valve Body WCB

Method: Investment Casting, Material: Carbon Steel ASTM A216 WCB, Ball valve castings from China foundry, we also can make cnc machining based on buyer’s drawings.

Casted Sprocket

Casting Method: Precision Investment Casting. Casting Material: Carbon Steel A148. Casted sprocket teeth with quench process, no need machining.

Pump Casting-Impeller

Method: Investment Casting Material: Steel Casting, Stianless Steel Casting Max Weight: 30kgs Pump fittings casting, include pump body, pump impeller and others. We also provide forged fastener, such as bolt, nut and gasket.

Glass Hardware Fittings Casting

Glass fittings castings are made by lost wax precision investment casting process, the material will be stainless steel CF8(SS304) and CF8M (SS316) mainly. Generally the mirror polishing will be necessary. Casting Quality also provide precision machining based on purchase design.

316 Stainless Steel Castings

Stainless steel castings, stainless steel valve body, SS316 is same as CF8M.

Carbon Steel ,
About China Castings
sand casting, investment casting, CNC machining and other castings from Chinese foundry

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