ASTM A453 Grade 660 Studs Bolts Heavy Hex Nuts
Specifications
STANDARDS |
ASTM A 453 GR.660 |
| CLASS: | A, B , C & D |
| MOC: | UNS 66286/ ALLOY A286 |
| DIMENSIONS: | ASME B18.2.1 , ASME B18.3 |
| THREADS INCHES: | ASME B1.1 2A/3A UNIFIED THREADS |
| THREADS METRICS: | B1.13M 6H COARSE THREADS |
| ADDITIONAL REQUIREMENTS: | NACE MR0103/MR0175/ISO 15156 COMPLIANCE |
| MANDATORY REQUIREMENTS: | FREE FROM MERCURY & RADIOACTIVE CONTAMINATION |
Chemical Analysis:
CHEMICAL ELEMENTS |
MIN. % |
MAX. % |
CARBON C% |
0.08 |
|
MANGANESE MN |
2.00 |
|
PHOSPHORUS |
0.040 |
|
SULFUR |
0.030 |
|
SILICON |
1.000 |
|
NICKEL |
24.00 |
27.00 |
CHROMIUM |
13.5 |
16.00 |
MOLYBDENUM |
1.00 |
1.50 |
TITANIUM |
1.90 |
2.35 |
ALUMINUM |
0.35 |
|
VANADIUM |
0.10 |
0.50 |
BORON |
0.001 |
0.010 |
Mechanical Properties:
GRADE |
GRADE 660 |
GRADE 660 |
CLASS |
A, B , C |
D |
TENSILE STRENGTH |
130 KSI |
130 KSI |
895 MPA |
895 MPA |
|
YIELD STRENGTH |
85 KSI |
105 KSI |
585 MPA |
725 MPA |
|
ELONGATON % |
15 MIN % |
15 MIN % |
REDUCTON AREA % |
18 MIN % |
18 MIN % |
BRINELL HARDNESS |
248- 341 |
248- 341 |
ROCKWELL HARDNESS |
24-37 HRC |
24-35 HRC |
Stress Rupture Test Requirements:
GR.660 |
CL. A , B, C |
| TEST TEMP. DEG F | 1200 |
| TEST TEMP. DEG . C | 650 |
| STRESS MIN. KSI | 56 |
| STRESS MIN. MPA | 385 |
| TIME TO RUPTURE. MIN. HR. | 100 |
| ELONGATION MIN. % | 5 |