Die Materials Specification Task Group Conducted by the Die Materials Specification Subcommittee February 12th & 13th, 2008 Die Steel Quality & Heat Treatment Acceptance Criteria.

Report
Die Materials Specification Task Group
Conducted by the
Die Materials Specification
Subcommittee
February 12th & 13th, 2008
Die Steel Quality & Heat Treatment
Acceptance Criteria
Die Materials Specification Task Group
#207-2006
Die Materials Specification Task Group
TABLE 1 - Chemical Composition of Special Quality Die Steels
NADCA
Grade
Material Category
C
Mn
P
S
Si
Cr
Mo
V
"Grade A"
Type H13 - Premium
0.37 0.42
0.20 0.50
0.025
max
0.005
max
0.80 1.20
5.00 5.50
1.20 1.75
0.80 1.20
"Grade B"
Type H13 - Superior
0.37 0.42
0.20 0.50
0.015
max
0.003
max
0.80 1.20
5.00 5.50
1.20 1.75
0.80 1.00
"Grade C"
Type 2367 & Modified
0.32 0.40
0.10 0.60
0.020
max
0.003
max
0.10 0.50
4.70 5.30
2.00 3.30
0.40 0.70
"Grade D"
Type H11 / 2343
0.35 0.42
0.20 0.60
0.025
max
0.003
max
0.80 1.20
5.00 5.50
1.10 1.60
0.30 0.60
"Grade E"
Type H11 Modified
0.32 0.43
0.10 0.70
0.020
max
0.003
max
0.10 0.55
4.70 5.70
1.10 2.10
0.30 0.80
Die Materials Specification Task Group
Cross Reference Guide to Special Quality Die Steels
Hardening Temp,
°F (°C)
NADCA
Grade
Tradename
Type
Preheating Temp, °F (°C)
A
Type H13 - Premium
A1885
1100-1250 (595-675)
1500-1560 (815-850)
1885 (1030)
B
Type H13 - Superior
B1885
1100-1250 (595-675)
1500-1560 (815-850)
1885 (1030)
C
Type 2367 & Modified
Uddeholm Dievar
C1850
1100-1200 (595-650)
1500-1560 (815-850)
1850 (1010)
Böhler W403 VMR
C1885
930-1020 (500-550)
1375-1475 (745-800)
1885 (1030)
Ellwood ExELL Hot Die
C1885
1100-1200 (595-650)
1475-1525 (800-830)
1885 (1030)
Kind RPU
C1885
1100-1200 (595-650)
1500-1560 (815-850)
1885 (1030)
Thyrotherm 2367
C1885
1100-1200 (595-650)
1500-1560 (815-850)
1885 (1030)
Bohler W300 Isobloc
D1830
1100-1200 (595-650)
1500-1560 (815-850)
1830 (1000)
Thyrotherm 2343 Supra
D1830
1100-1200 (595-650)
1500-1560 (815-850)
1830 (1000)
Uddeholm Vidar
Supreme
D1830
1100-1200 (595-650)
1500-1560 (815-850)
1830 (1000)
D
Type H11 / 2343
Die Materials Specification Task Group
Cross Reference Guide to Special Quality Die Steels
NADCA
Grade
Tradename
E
Type H11 Modified
Type
Preheating Temp, °F (°C)
930-1020 (500-550)
1375-1475 (745-800)
1100-1200 (595-650)
1500-1560 (815-850)
1100-1200 (595-650)
1500-1560 (815-850)
1100-1200 (595-650)
1500-1560 (815-850)
Hardening Temp,
°F (°C)
Bohler W400 VMR
E1810
Uddeholm Vidar Superior
E1825
Kind TQ-1
E1850
Thyrotherm E38K
E1850
Aubert & Duval ADC3
E1885 1375-1425 (745-775)
1885 (1030)
Dunn DSS#3
E1885 1275-1325 (690-720)
1885 (1030)
Ellwood ExELL Tuf-Die
E1885
Nippon Koshuha KDA-1
E1885
1100-1200 (595-650)
1450-1500 (790-815)
1100-1200 (595-650)
1475-1525 (800-830)
1810 (990)
1825 (995)
1850 (1010)
1850 (1010)
1885 (1030)
1885 (1030)
Die Materials Specification Task Group
Possible NADCA Sponsored Projects:
• Impact toughness & thermal fatigue resistance of the
new grades listed in #207-2006
Project 161: Thermal Fatigue Resistance of High Performance Die Steels
Project Description: The objective is to provide the Die Materials Specifications and
Heat Treating Task Force with detailed thermal fatigue and Charpy V-notch behavior
of the advanced die steels that are included in NADCA 207-2006. Whereas data was
provided by the suppliers of the steels, more testing of these steels is needed to
strengthen the Specification and promote implementation by the die casting industry.
• 8 thermal fatigue samples and 80 CVN samples will be machined from select steels
(two TF and ten Charpy samples per steel type) and quenched according to the
specification. The as-quenched and the tempered microstructures will be determined.
The thermal fatigue resistance of the eight specimens and the Charpy V-notch impact
strength will be evaluated.
$25K
Die Materials Specification Task Group
Possible NADCA Sponsored Projects:
• Impact toughness & thermal fatigue resistance of the
new grades listed in #207-2006
Project 161: Thermal Fatigue Resistance of High Performance Die Steels
Project Description: The objective is to provide the Die Materials Specifications and
Heat Treating Task Force with detailed thermal fatigue and Charpy V-notch behavior
of the advanced die steels that are included in NADCA 207-2006. Whereas data was
provided by the suppliers of the steels, more testing of these steels is needed to
strengthen the Specification and promote implementation by the die casting industry.
• 8 thermal fatigue samples and 80 CVN samples will be machined from select steels
(two TF and ten Charpy samples per steel type) and quenched according to the
specification. The as-quenched and the tempered microstructures will be determined.
The thermal fatigue resistance of the eight specimens and the Charpy V-notch impact
strength will be evaluated.
$25K
Die Materials Specification Task Group
• 8 thermal fatigue samples and 80 CVN samples will be
machined from select steels (two TF and ten Charpy samples per
steel type) and quenched according to the specification. The asquenched and the tempered microstructures will be determined.
The thermal fatigue resistance of the eight specimens and the
Charpy V-notch impact strength will be evaluated.
• 2 Thermal Fatigue samples after vac quench & triple temper 44/46 HRC
• 5 CVN samples after oil quench & triple temper to 44/46 HRC
• 5 CVN samples after vac quench & triple temper to 44/46 HRC
Die Materials Specification Task Group
• 8 thermal fatigue samples and 80 CVN samples will be
machined from select steels (two TF and ten Charpy samples per
steel type) and quenched according to the specification. The asquenched and the tempered microstructures will be determined.
The thermal fatigue resistance of the eight specimens and the
Charpy V-notch impact strength will be evaluated.
• 2 Thermal Fatigue samples after vac quench & triple temper 44/46 HRC
• 5 CVN samples after oil quench & triple temper to 44/46 HRC
• 5 CVN samples after vac quench & triple temper to 44/46 HRC
• Grade C1850:
• Grade C1885:
• Grade E1885:
• Grade E1885:
• Backup: Grade E1850:
Uddeholm Dievar
Thyssen 2367
Ellwood Tuf-Die
Aubert & Duval ADC3
Thyssen E38K
• Minimum size requirements: 8” thick x 8” wide x 6” long
• Minimum parent block size: 12”thick x 10”wide
Die Materials Specification Task Group
Cross Reference Guide to Special Quality Die Steels
Hardening Temp,
°F (°C)
NADCA
Grade
Tradename
Type
Preheating Temp, °F (°C)
A
Type H13 - Premium
A1885
1100-1250 (595-675)
1500-1560 (815-850)
1885 (1030)
B
Type H13 - Superior
B1885
1100-1250 (595-675)
1500-1560 (815-850)
1885 (1030)
C
Type 2367 & Modified
Uddeholm Dievar
C1850
1100-1200 (595-650)
1500-1560 (815-850)
1850 (1010)
Böhler W403 VMR
C1885
930-1020 (500-550)
1375-1475 (745-800)
1885 (1030)
Ellwood ExELL Hot Die
C1885
1100-1200 (595-650)
1475-1525 (800-830)
1885 (1030)
Kind RPU
C1885
1100-1200 (595-650)
1500-1560 (815-850)
1885 (1030)
Thyrotherm 2367
C1885
1100-1200 (595-650)
1500-1560 (815-850)
1885 (1030)
Bohler W300 Isobloc
D1830
1100-1200 (595-650)
1500-1560 (815-850)
1830 (1000)
Thyrotherm 2343 Supra
D1830
1100-1200 (595-650)
1500-1560 (815-850)
1830 (1000)
Uddeholm Vidar
Supreme
D1830
1100-1200 (595-650)
1500-1560 (815-850)
1830 (1000)
D
Type H11 / 2343
Die Materials Specification Task Group
Cross Reference Guide to Special Quality Die Steels
NADCA
Grade
Tradename
E
Type H11 Modified
Type
Preheating Temp, °F (°C)
930-1020 (500-550)
1375-1475 (745-800)
1100-1200 (595-650)
1500-1560 (815-850)
1100-1200 (595-650)
1500-1560 (815-850)
1100-1200 (595-650)
1500-1560 (815-850)
Hardening Temp,
°F (°C)
Bohler W400 VMR
E1810
Uddeholm Vidar Superior
E1825
Kind TQ-1
E1850
Thyrotherm E38K
E1850
Aubert & Duval ADC3
E1885 1375-1425 (745-775)
1885 (1030)
Dunn DSS#3
E1885 1275-1325 (690-720)
1885 (1030)
Ellwood ExELL Tuf-Die
E1885
Nippon Koshuha KDA-1
E1885
1100-1200 (595-650)
1450-1500 (790-815)
1100-1200 (595-650)
1475-1525 (800-830)
1810 (990)
1825 (995)
1850 (1010)
1850 (1010)
1885 (1030)
1885 (1030)
Die Materials Specification Task Group
Possible NADCA Sponsored Projects:
L. Impact Toughness
• A coupon approximately 2½” x 4½” x ½” thick shall be prepared from a
sample preferably from the same Grade/block of Special Quality die steel
of known “annealed capability” impact toughness such that the 2½”
dimension represents the thickness direction, the 4½” dimension represents
width direction, and the ½” dimension represents the length direction of
the parent material.
• The coupon shall be attached to each workpiece away from edges and
corners such that a 2½” x 4½” face of the coupon is in intimate contact
with the workpiece. If tack welds are used, the welds should be placed
along the 4½” dimension.
• The coupon shall accompany the workpiece through the preheating,
austenitizing, quenching, and first temper of the hardening procedure.
• Test coupon must be tempered to 44/46 HRC.
NOTE: If a final hardness other than 44/46 HRC has been specified, the
coupon may be removed from the die after the first temper and then
separately tempered to 44/46 HRC.
Die Materials Specification Task Group
Possible NADCA Sponsored Projects:
L. Impact Toughness
• A coupon approximately 2½” x 4½” x ½” thick shall be prepared from a
sample preferably from the same Grade/block of Special Quality die steel
of known “annealed capability” impact toughness such that the 2½”
dimension represents the thickness direction, the 4½” dimension represents
width direction, and the ½” dimension represents the length direction of
the parent material.
• The coupon shall be attached to each workpiece away from edges and
corners such that a 2½” x 4½” face of the coupon is in intimate contact
with the workpiece. If tack welds are used, the welds should be placed
along the 4½” dimension.
• The coupon shall accompany the workpiece through the preheating,
austenitizing, quenching, and first temper of the hardening procedure.
• Test coupon must be tempered to 44/46 HRC.
NOTE: If a final hardness other than 44/46 HRC has been specified, the
coupon may be removed from the die after the first temper and then
separately tempered to 44/46 HRC.
Die Materials Specification Task Group
Possible NADCA Sponsored Projects:
• Capability impact toughness of advanced die steels at
oil quenched and tempered hardness “other than”
44/46HRC
• ~$50K - $100K
• Commercially hardened impact toughness of advanced
die steels at hardness “other than” 44/46HRC
•~$25K
• Optimization of the tempering time/temperature
process
•$?
• Cryogenic Treatment of Die Steels
$?

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