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Page 1: Die Casting Tooling Grades -  · PDF fileIncluding an introduction to Die Casting Specifications: NADCA 207-2003 NADCA 207-2006 Die Casting Tooling Grades

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Including an introduction to Die Casting Specifications:

NADCA 207-2003NADCA 207-2006

Die Casting Tooling Grades

Page 2: Die Casting Tooling Grades -  · PDF fileIncluding an introduction to Die Casting Specifications: NADCA 207-2003 NADCA 207-2006 Die Casting Tooling Grades

Pre-tested —to give you peace of mindAt Bohler-Uddeholm we pre-test our Charpy V-notch toughness levels at our mills in order to ensure that we meet or exceed applicable specifications. By taking this additional step you can be assured that our material will consistentlymeet your expectations for Bohler-Uddeholm products. Our testing means thatcustomers could consider eliminating additional qualification testing. Keep a sample for future reference and simply test for toughness after heat treatment.This will save you time and money.

R&DResearch and development play a strategic role at Bohler-Uddeholm. We knowthat in depth process and material research is the basis for producing the highest quality products. In order to keep up with the constant demand forimproved materials, Bohler-Uddeholm maintains a close intensive cooperationwith universities and research centers and supports the exchange of informationat all levels.

The knowledge of our technical experts who are engaged in fundamentalresearch ultimately results in superior value to our customers. Our researchactivities yield the most modern high performance Tool Steels and High SpeedSteels produced by means of Powder Metallurgy production techniques,Aluminum-Alloyed Tool Steels, Nitrogen Alloyed Tool Steels, Electro-Slag Remelted(ESR) and Vacuum Remelted (VMR/VAR) Tool Steels and special products.

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Page 3: Die Casting Tooling Grades -  · PDF fileIncluding an introduction to Die Casting Specifications: NADCA 207-2003 NADCA 207-2006 Die Casting Tooling Grades

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Heat Treatment AllianceIn an effort to continue to add value in our dealings with our customers, we have now created an alliance of world-class heat treaters to support us in ourcommitment to supplying the World’s highest quality tool steels. This alliance will allow us to supply the highest quality steel and assure our customers that the best heat treatment practices are being utilized to enhance the characteristics of our products.

Through this partnership we deliver:

Enhanced customer service

Joint technical support

Joint problem solving

An unmatched commitment to quality!

HEAT TREATINGMETAL FINISHING

McintosJ
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Page 4: Die Casting Tooling Grades -  · PDF fileIncluding an introduction to Die Casting Specifications: NADCA 207-2003 NADCA 207-2006 Die Casting Tooling Grades

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NADCA 207-2003 introduced two acceptance levels for AISI H13 for the DieCasting Industry: The Premium Level and The Superior Level.

Premium Level NADCA 207-2003The Premium criteria for H13 material under the NADCA 207-2003Specification does not deal with the steel making practices or the forgingpractices of the steel manufacturer. Rather the specification calls forimproved levels of cleanliness, a reduction in micro and macro banding,and for certification of impact toughness levels at an 8 ft-lbs. average witha 6 ft-lbs. single minimum value. Combined with NADCA recommended vacuum austenitizing and pressurized gas quenching choosing steels thatmeet this specification can lead to success in production in the die-castingprocess.Bohler W302 ISOBLOC meets the Premium Criteria for NADCA 207-2003.

BOHLER W302 ISOBLOC®

(Premium H13)This premium H13 grade is an electro-slag remelted (ESR) steel,and with thisprocess the steel has excellent uniform toughness for hot work applications.W302 ISOBLOC® is recommended in applications where there is short termdemand on the die material, and heat checking and hot wear are not major factors in the life of the die.

Superior Level NADCA 207-2003When dealing with superior grade H13, the steel making process needs to include secondary refining, either ESR (electro-slag remelting) or VAR (vacuum arc remelting). Additionally the specification calls for improved levels of cleanli-ness, a reduction in micro and macro banding, and for certification of impacttoughness levels at 10 ft-lbs. average with 8 ft-lbs. single minimum value. Thistype of manufacturing technique combined with NADCA recommended vacuumaustenitizing and pressurized gas quenching can lead to success in productionwhere high volume production or critical performance in the die-casting process is required.

Uddeholm Orvar Superior and Bohler W302 Superior meet the SuperiorCriteria for NADCA 207-2003.

UDDEHOLM ORVAR® SUPERIOR (Premium H13) This H13 was developed to meet the highest criteria for any remeltedH13. This steel is produced by a special melting and refining technique in order to give mechanical properties with maximum isotropy and iscertified to meet a minimum average Charpy V-notch test result of 10 ft-lbs. at 44-46 HRC. Suitable for a wide variety of hot work applications, including tools for high pressure die casting, hot extrusionand press forging. Orvar Superior is produced to meet the criteria upto 18 inches in thickness.

BOHLER W302 SUPERIOR®

(Premium H13)This remelted H13 is produced via special melting, refiningand forging techniques to possess excellent toughness,making it suitable for demanding hot work applications indimensions 18 inches and greater in thickness. This material iscertified to meet a minimum average 10 ft-lbs. Charpy V-notch at44-46 HRC. It is recommended in the larger applications where the maximumproperties in an H13 are required.

207-2003

Page 5: Die Casting Tooling Grades -  · PDF fileIncluding an introduction to Die Casting Specifications: NADCA 207-2003 NADCA 207-2006 Die Casting Tooling Grades

While H13 is good for most general applications in die casting, alternative gradesare available that can address specific needs within the die casting environment.NADCA 207-2006 combines the specifications for Premium and SuperiorLevels of H13 from NADCA 207-2003, and adds additional controls for otherhot work tool steels. All of the alternative grades must be remelted.

The Premium Level of H13 is now referred to as NADCA Grade “A”, and TheSuperior Level is referred to as NADCA Grade “B”.

Bohler W302 Isobloc meets the requirements of Grade “A”

Uddeholm Orvar Superior and Bohler W302 Superior meet the requirements of Grade “B”.

Grade C: NADCA 207-2006—In applications where higher temper resistance isrequired, to minimize the loss of hardness at elevated temperatures, there are hot work tool steels available to improve the die’s performance. These grades arebased on a 1.2367 chemistry, but they have been enhanced to improve perform-ance as a die casting material.

Uddeholm Dievar and Bohler W403 VMR meet the requirement ofGrade “C” and are included within NADCA 207-2006 specification.

UDDEHOLM DIEVAR®

Dievar® is a high performance chromium molybdenum vanadium alloyed hot worktool steel which is manufactured using the very latest in production and refiningtechniques. Its unique chemistry and manufacturing process offers an unparalleled

combination of resistance to heat checking, grosscracking, hot wear and plastic deformation. Dievar® iscertified to a minimum, average Charpy V-notchimpact toughness of 14 ft-lbs. (19 J) and a minimumunnotched impact toughness of 220 ft-lbs. (300 J)per testing procedures defined in the NADCA docu-ments. For larger cross sections, follow our guidelines for heat treatment.

BOHLER W403 VMR®

Using Vacuum Arc Remelting along with chemistry modification to a standard1.2367 type alloy, this grade has excellent uniformity in terms of mechanicalproperties and hot wear resistance. Using a hardening temperature of 1885°F asa standard practice, it can meet the toughness levels of a Superior H13, but havebetter hot wear resistance. This grade can be special ordered from our mill.

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207-2006

Page 6: Die Casting Tooling Grades -  · PDF fileIncluding an introduction to Die Casting Specifications: NADCA 207-2003 NADCA 207-2006 Die Casting Tooling Grades

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Grade D: NADCA 207-2006—In applications when high toughness is required,due to gross cracking or heat checking issues, but temper resistance is not ascritical, an H11 type alloy can be considered. These hot work tool steels have acapability requirement of 14 ft-lbs. minimum average Charpy V-notch toughnessat 44-46 HRC. These grades are also required to be remelted, which furtheradds to the overall uniformity of the product.

Bohler W300 Isobloc® and Uddeholm Vidar® Supreme meet the requirements of Grade “D” and are included within the NADCA 207-2006 specification.

*These grades are special order from our mills.

Grade E: NADCA 207-2006—This category of hot work tool steels containsthose grades which have been modified to enhance the characteristics of theH11 type alloy. Therefore, these grades are modifications to that alloys con-tained in Grade D. Further enhancing the toughness of the H11 family, thesegrades contain some of the toughest hot work tool steel grades. Modificationsto the refining process through enhanced remelting, and the chemistry changesmake this possible.

Bohler W400 VMR® and Uddeholm Vidar® Superior meet the requirements of Grade “E” and are included within the NADCA207-2006 specification.

BOHLER W400 VMR®

Using Vacuum Arc Remelting along with chemistry modification to a standardH11 type alloy, this grade has excellent uniformity in terms of mechanical properties. Using a hardening temperature of 1810°F as a standard practice, it can meet Charpy V-notch toughness values for capability at 44-46 HRC of18ft-lbs. Our internal testing shows even higher values making this the toughesthot work tool steel we produce.

UDDEHOLM VIDAR SUPERIOR®

Using pressurized ESR for remelting, along with chemistry modifications to astandard H11 type alloy, this grade has capabilities much like that of DIEVAR in toughness criteria. *This grade can be special ordered from our mill.

Other Tooling Material ChoicesUDDEHOLM QRO® 90 SUPREMEQRO® 90 Supreme is a premium remelted hot work tool steel with very goodstrength and hardness at elevated temperatures. It has excellent heat transfercharacteristics. It is used in smaller dies for brass casting, or in small dies inaluminum die casting where the temperatures run high during production, andcracking is not a concern.

BOHLER W360 ISOBLOC®

W360 Isobloc is a remelted hot work tool steel which can be heat treated to amaximum hardness level of 58 HRC. It is recommended for use in applicationswhere hot wear resistance and/or resistance to plastic deformation is required.One such application is in zinc die casting, where a hardness higher than 52HRC is required, and inserts in aluminum die casting where erosion is the majorissue.

Page 7: Die Casting Tooling Grades -  · PDF fileIncluding an introduction to Die Casting Specifications: NADCA 207-2003 NADCA 207-2006 Die Casting Tooling Grades

Automotive SpecificationsIn addition to specifications such as those created by NADCA, many automotiveOEM’s and other industry leading organizations have crafted their own uniquespecification requirements. Bohler-Uddeholm meets or exceeds many of thesespecifications and a sampling of the specifications for which we have qualifiedmaterial is listed here.

Die-Casting Specifications:

Aallied Die Casting Amcan Castings LimitedBlue Ridge Pressure Castings, Inc.Briggs and Stratton Corp.Burlington Technologies Inc.DaimlerChryslerEastern Die Casting Inc.Ford Motor CompanyGanton Technologies Inc.

General Motors Powertrain GroupGibbs Die Casting Corp.J.L. French Corp.Madison Kipp Corp.Magnesium ProductsMetalloyPHB Tool and DieSPX ContechToral Cast

Properties ComparisonDie Casting Hot Work Tool Steels

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Page 8: Die Casting Tooling Grades -  · PDF fileIncluding an introduction to Die Casting Specifications: NADCA 207-2003 NADCA 207-2006 Die Casting Tooling Grades

USA4902 Tollview DriveRolling Meadows, IL 60008www.bucorp.comemail: [email protected]

Sales:Tel: (800) 638-2520

© 2006, Bohler-Uddeholm Corporation

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