We pour over 150 different alloys, confirming to different international standards like ASTM, DIN, JIS, IS, BS etc. No other process offers as many alloys to choose from as the investment casting process. We have a expert metallurgical team available to assist in developing the right alloys for any applications. Our broad selection of alloys helps you to select the alloy that is best suited for your Stainless Steel Investment Castings or Aluminium Investment Casting and will meet your performance requirements.

In Ferrous specifications, we handle Carbon Steels, Low alloy Steels, Case hardening Steels, Austenitic Stainless Steels, Martenstic Stainless Steel, Duplex Stainless Steels, Cast Iron and Ductile Iron (SG Iron).

In Non-Ferrous specifications, we handle Pure Copper and Copper Alloys, Aluminium Alloys, Nickel base Alloys and Cobalt base Alloys.

Though a number of other standards, and standard writing bodies come into perspective when one deals with ferrous and non-ferrous castings, the list given below is an example to tell our customers more about the standards that are commonly used in the manufacturing of investment castings and fully finished cast components. Many of the ISO standards for the newly developed ferrous and non-ferrous alloy castings are still being written, and are yet in working drafts format under the examining committee.

These new standards are not as comprehensive and time tested as the older ones; for example, DIN (Germany), BIS (United Kingdom), ASTM (USA), Alloy Casting Institute (USA), ISI (India), ANFOR (France), to name a few. One only needs a superficial knowledge of a few of the existing steel casting specifications, and of metallurgy in general, to understand that stating what ones needs are is neither simple nor sinecure to manufacture.

Download guidelines for selecting commonly used metal grades and standards


Some of the castings standards practiced by Bhagwat Technocast Pvt. Ltd. are mentioned in the following sections. The list is neither complete nor comprehensive in any manner. Welding, machining, inspection, testing and other related standards, are excluded from this section to keep it simple. We are keen to work with customer’s specified country standard and specifications. ISO, DIN, BS, GOT, EN and the like casting standards are not mentioned but we do manufacture products confirming to them.

(A) AUSTENITIC STAINLESS STEELS

One of the most popular families of stainless steel used in industry, austenitic stainless steel castings, based around the common “18-8” chromium to nickel ratio, make up the majority of the stainless alloys poured at Bhagwat Technocast Private Limited. With its almost “perfect” mix of castability, weldability, and metallurgical cleanliness, any of the “300 Series” of stainless steels will make excellent investment castings.  Cast 300 series alloys are not hardenable by heat treat, and are generally always magnetic to various degrees, unlike their completely non-magnetic wrought counterparts.  A special and highly informative paper we have written on this topic can be found as a PDF file here.  Sometimes austenitic castings should be supplied in a passivated condition for optimum corrosion resistance, and we can take care of that for you as well.

Super austenitic stainless steels, such as alloy AL-6XN and 254SMO, exhibit great resistance to chloride pitting and crevice corrosion because of high molybdenum content (>6%) and nitrogen additions, and the higher nickel content ensures better resistance to stress-corrosion cracking versus the 300 series. The higher alloy content of super austenitic steels makes them more expensive, and many times other steels can offer similar performance at lower cost and are preferred in certain applications.  We do also offer some of these alloys, but we encourage you to contact us for more assistance regarding super austenitic alloys.

Specification    

Cast Grade

Wrought Equivalent

ASTM A-743, MIL-S-81591

CF16F, IC 303

303

ASTM A-351, A-743, A744

CF20

302

ASTM A-351, A-743, A-744 ASME SA-351

CF3

304L

ASTM A-351, A-743, A-744 ASME SA-351

CF3M

316L

ASTM A-351, A-743, A-744 ASME SA-351

CF8

304

ASTM A-351, A-743, A-744

CF8C

347

ASTM A-351, A-743, A-744 ASME SA-351

CF8M

316

ASTM A-351, A-743, A-744

CG3M

317L

ASTM A-351, A-743, A-744

CG8M

317

ASTM A-743

CH-20

309

ASTM A-743

CK-20

310

ASTM A-351, A-743, A-744

CN7M

ALLOY 20

(B) HEAT RESISTANT STAINLESS STEELS

The inherent high hot strength of Ni-Cr-Fe alloys precludes them from being able to be hot worked, including forging or rolling, however they make excellent investment castings.  Alloy selection for any high temperature plus corrosion application is based on the corrosive conditions and maximum temperatures expected in these extremely harsh operating environments.  We offer an extensive range of heat resistant stainless steel alloys for your convenience.

Specification

Cast Grade

Wrought Equivalent

ASTM A-297

HD

327

ASTM A-297

HE

312

ASTM A-297

HF

308

ASTM A-297

HH

309

ASTM A-297

HI

NA

ASTM A-297

HK

310

ASTM A-351

HK40

310

ASTM A-297

HN

311

ASTM A-297

HP45

NA

ASTM A-297 MOD

HP45W

NA

ASTM A-297

HT

330

ASTM A-297

HU

331

ASTM A-297 MOD

HUCB

NA

ASTM A-297

HX

335

ASTM A-297 MOD

HXM

NA

(C) DUPLEX STAINLESS STEELS

Duplex stainless steels are unique in that they have a mixed microstructure of austenite and ferrite, the aim usually being to produce a 50/50 mix, although in commercial alloys that ratio is often altered.  Duplex stainless steels are typically called out for applications where exceptional strength and a specific corrosion resistance must co-exist in the alloy.  They have roughly twice the strength compared to austenitic stainless steels and also improved resistance to localized corrosion, particularly pitting, crevice corrosion and stress corrosion cracking. They are characterized by high chromium (19–32%) and molybdenum (up to 5%) and lower nickel contents than austenitic stainless steels.  We offer a full range of duplex, as well as well next generation super-duplex alloys involving nitrogen enhancement.

Specification

Cast Grade

Wrought Equivalent

ASTM A-351, A-743, A-744, A-890-1A

CD4MCu

25-5PH

ASTM A-890-1B

CD4MCuN

25-5PH

ASTM A-890-3A

CD6MN

NA

ASTM A-890-5A

CE3MN

**

ASTM A-890-6A

CD3MWCuN

**

ASTM A-351, A-743, A-744

CK-3MCuN

**

ASTM A-351, A-743

CG6MMn

NITRONIC 50

ASTM A-351, A-743

CF10SMnN

NITRONIC 60

(D) MARTENSITIC STAINLESS STEELS

The family of martensitic stainless steels are not as corrosion-resistant as most other two classes but are extremely strong and tough, yet still highly machinable.  The family gets their name from the fact that each of the alloys contain sufficiently low enough nickel that all alloys can be hardened by heat treatment.  The metallurgical name for the structure produced from heat treatment is martensite, hence the name for this popular family of stainless steel.  Also referred to as the “400 Series” stainless steels, martensitic stainless steel contains chromium (12–14%), molybdenum (0.2–1%), nickel (less than 2%), and carbon (about 0.1–1%) which renders more hardenability but making the material more brittle. It is therefore always tempered after the hardening process of quenching, and is always magnetic.

Specification

Cast Grade

Wrought Equivalent

ASTM A-217, A?743, A?487

CA15

410

ASTM A-743 MOD

CA15F

416

ASTM A-743

CA40

420

ASTM A-743

CA40F

420 MOD

ASTM A-743, A-487

CA6NM

410 MOD

IC 440C

440C

440C

IC 440F

440F

440F

MIL-S-81591

IC 431

431

(E) ALLOY STEELS

This family of steel consists of standard cast “Plain Carbon” steels similar to the readily available wrought “Hot rolled or Cold rolled” alloys, as well as the heavily consumed more common medium to high alloyed steels, such as 8620, 4140, and 4340.  This is just a short list of the many plain and alloyed steels we produce, so if yours is not listed, chances are we do pour it, so please just email and ask.  With a wide range of properties attainable through the various heat treatments we can provide, this family of steel is very popular for investment casting.

Specification

Cast Grade

Wrought Equivalent

AISI 1018

1018

1018

AISI 1060

1060

1060

ASTM A-732, MIL-S-22141

1OQ, IC 4340

4340

ASTM A-732

13Q

8620

ASTM A-732

14Q

8630

ASTM A-732

1A

1020

ASTM A-732

4Q

1050

ASTM A-732

7Q

4130

ASTM A-732

8Q

4140

ASTM A-217

WC6

4118 MOD

ASTM A-217, ASME SA-217

WC9

4115 MOD

ASTM A-216, ASME SA-216

WCB

1025

 

(F) PRECIPITATION HARDENED STAINLESS STEELS

A very popular family of stainless steel, precipitation-hardening martensitic stainless steels have corrosion resistance comparable to the austenitic grades we offer, but have the unique benefit of being able to be precipitation hardened to even higher strengths than the martensitic grades, using a low temperature “aging” process, rather than a severe quench into a liquid.  This allows precipitation hardening stainless steels to be used in corrosive applications where finished dimensions would be too compromised by a liquid quench, which makes the alloy an excellent candidate for investment casting.  With excellent foundry characteristics, the most common is CB7cu-1 alloy, the direct cast substitute for wrought 17-4 PH, and uses about 17% chromium and 4% nickel.

Specification

Cast Grade

Wrought Equivalent

AMS 5343C, ASTM A-747, MIL-S-81591

CB7Cu-1, 5343C, IC 17-4

17-4PH

AMS 5357, ASTM A-747

CB7Cu-2, 5357

15-5PH

 

(G) COBALT BASE ALLOYS

Cobalt-based alloys are almost the “perfect” fit as far as investment castings go, and have been used in demanding applications for as long as investment casting has been available as an industrial process.  Due to their inherent resistance to wear, machining of cobalt is not easily done, and therefore near-net-shape investment castings are the perfect way to produce components from these alloys.

From the introduction of “Stellite” in the late 1920’s, cobalt alloys have contributed significantly to many industrial products and processes.  With excellent foundry properties, very high fluidity, and the ability for the alloys to be melted in non-vacuum atmospheres, the most popular varieties in the family consist of Cobalt 3, 6, and 12, which we offer. Investment cast cobalt alloys have found exceptional acceptance in the many industries we serve, especially in the harsh environment of the Alberta oil patch. 

Specification

Cast Grade

Wrought Equivalent

AMS 5387B, 5373C

COBALT 12

**

NA

COBALT 3

**

NA

COBALT 6

**

 

(H) NICKEL BASE ALLOYS

Thanks to their resistance to chemical corrosion while maintaining excellent mechanical properties at elevated temperatures, nickel based alloys have always earned an important place in industry.  The family of nickel based alloys Our offers meets a wide range of applications, and while correct to classify based on the two or three major alloying elements in the alloy, such as Ni-Cr-Mo, Ni-Mo-Fe, or Ni-Cu, many people today still call the various alloy by their original wrought names, such as Hastelloy, Inconel, and Monel.   Nickel alloys can be among some of the more challenging castings to produce, and attention to properly addressing the inherent difficulties in casting the alloy is crucial.  Bhagwat Technocast Private Limited has mastered the production of these nickel-based castings, producing high quality castings for the most stringent of applications, including nuclear and extreme corrosion – high pressure pumps, valves, and other vessel related equipment.

Specification

Cast Grade

Wrought Equivalent

ASTM A-494

CW12MW

**

ASTM A-494

CW2M

**

ASTM A-494

CW6M

**

ASTM A-494

CW6MC

**

ASTM A-494

CY-40

**

ASTM A-494

N-7M

**

ASTM A-494, QQ-N-288

>M30C, MONEL A, MONEL E

**

 

 

(I) ALLOYED IRONS

High-alloy “white cast irons” are an important group of  materials, considered separate and distinct from that of ordinary types of cast irons, such as ductile malleable, or gray, which are typically not investment cast. In these distinctly different cast iron alloys, the alloy content is well above 4%, and are usually produced in foundries like Bhagwat Technocast Private Limited, whom are specially equipped to produce other highly alloyed materials.

The high-alloy white irons are primarily used for abrasion-resistant applications and with excellent foundry properties, are readily investment cast into the parts needed in machinery for crushing, grinding, and handling of abrasive  materials.  The chromium content of high-alloy white irons also enhances their corrosion-resistant properties. The alloy content and heat treatment applied will distinguish the final properties of various grades available, and helps develop the proper balance between the resistance to abrasion, and the toughness needed to withstand repeatied impact.

Specification  

Cast Grade

Wrought Equivalent

ASTM A-532

GRADE IIC

**

ASTM A-439

TYPE D-5S

**

ASTM A-439

TYPE D-2

**

ASTM A-436

TYPE 2

**

ASTM A-436

TYPE 5

**

 

(J) TOOL STEELS

Tool steels are characterised by high hardness, resistance to abrasion, and in many cases, resist softening at elevated temperatures.  With over 95 chemistries which typically make up the family of wrought tool steels available, the cast varieties tend to be comprised of a more limited list of the most common tool steels used today, due to the fact that tool steels are one of the lowest tonnages poured.  If you do not see your preferred tool steel listed, just get in touch with us to see if we are able to cast it, chances are we can.

Specification

Cast Grade

Wrought Equivalent

ASTM A-597

CD-2

D-2

NA

CS-1

S-1

ASTM A-597

CS-7

S-7

NA

W1 TOOL STEEL

W-1

ASTM A-597

CH13

H-13

(K) COPPER BASE ALLOYS

Most all copper based alloys can be investment cast very successfully.  There are many, many copper based alloys in use today.  Here is a list of the most popular copper alloy brasses and bronzes which we produce.  If your desired alloy is not on the list, please contact us to inquire if we can pour it for you, as we likely can.

Specification

Cast Grade

Wrought Equivalent

CDA 83400

ALLOY 90/10

RED BRASS

CDA 92200

ALLOY A

LEADED TIN BRONZE

CDA 83600

ALLOY B

LEADED RED BRASS

CDA 84400

ALLOY C

SEMI-RED BRASS

CDA 95400

ALBR9C

ALUMINUM BRONZE

CDA 86500

MB65M

MANGANESE BRONZE

CDA 90300

SAE 620

TIN BRONZE

CDA 93200

SAE 660

HIGH LEADED TIN BRONZE

CDA 87300

EVERDUR

SILICON ALLOY

CDA 87200

SB12A

SILICON BRONZE

CDA 87500

SB875

SILICON BRASS

CDA 95800

C95800 B271, B148

NICKEL AL-BRONZE

NOTES:

(1) NA-          INFORMATION IS NON EXISTING OR UNAVAILABLE.

(2) **            SOME ALLOYS ARE DESCRIBED BY TRADE NAMES OWNED BY SPECIFIC COMPANIES. PLEASE CALL IF THERE ARE ANY SPECIFIC QUESTIONS ABOUT THESE ALLOYS.