December 1, 2018

Carbon Steel A27 GR 70-40

Grade 70-40[485-275] (UNS Code: J02501) 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 70-40[485-275] (J02501) Casting Chemical Requirements and Mechanical Property:
Carbon: 0.25max
Manganese: 1.20 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

Tractor Shifting Forks, 1045 carbon steel castings

Tractor Shifting Forks, Lost Wax Precision Investment Casting

Tensile Strength: 70ksi(485Mpa) min
Yield Strength: 40ksi (275Mpa) min
Elongation in 2in. or 50mm: 22.0% min
Reduction of Area: 30% min
Grade 70-40 [485-275] may be used to meet the requirement of Grade 70-36 [485-250], when agreed upon between the manufacturer and the purchaser

Heat treatment process: generally all Grade 70-40[485-275] (J02501) 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. 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. 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 by investment casting. It can achieve the best appearance with good tolerance

  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. CNC Machining

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

  5. CAD Design

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

  6. Tools/Mold 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.


As a professional casting manufacture, Qingdao Casting Quality Industrial pay much attention to the quality and technology, Our products are much more casting and forging parts. We are mainly do Sand Casting, Investment Casting ( Lost Wax Casting or Precision Casting)  and Die Casting .Today, its products are marketed globally through many countries.

Our Services

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

  1. Sand Casting
  2. Investment Casting
  3. Shell Casting
  4. CNC Machining
  5. CAD Design
  6. Tools/Mold Design

Many buyers from all over the world purchase products from China. But do you know the quality of products in China? Maybe you only pay the surface and price, but the inner quality is lost .

Housing Casting Design in Solidworks

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

Tractor Shifting Forks Casting

With Precision Lost Wax Investment Casting process, Tractor transmission shifting forks is made from carbon steel 1045 or alloy steel, this casting should be heat treatment after machining and assemble with gearbox for speed  adjustment.

Stainless Steel Pipe Fittings

Method: Investment Casting, Lost Wax Casting, Precision Casting Material: Stainless Steel CF8,CF8M Thread: ASTM B1.20.1, NPT, BS21

Volute Casing Casting

Volute Casting for Pumps, made by precision investment casting, the materiel is stainless steel or carbon steel. OEM made for pump manufacturers.

17-4PH Impeller Casting (Screw or Auger)

17-4PH Impeller Casting, Screw or Auger by investment casting process with cnc machining

Bronze Clamp Castings

Bronze Clample casting is made by investment casting or sand casting for pluming industry.

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.

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

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