ASTM A638 Gr.660
2026-07-31 08:30:00 Origin： Remark：0 Click：
ASTM A638 Grade 660 is a high alloy content of creep-resisting 15Cr-26Ni-1Mo-2Ti-V Aged austenitic steel, stock available round bar, wire, sheet
TECHNICAL DATA SHEET - ASTM A638 type 660
Material category - 15Cr-26Ni-1M-2Ti-V Austenitic ageing steel
Product description
The alloy is usually produced by AOD / VOD / VIM followed by electroslag refining (ESR) / VAR if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied black / bright in the solution treated condition.
Final heat treatment: solution treatment + aged.
The alloy is usually produced by AOD / VOD / VIM followed by electroslag refining (ESR) / VAR if necessary for special purpose. Bars and, where applicable, forgings are subjected to ultrasonic examination based on the different levels according to the buyers' requirements.
Bars are usually supplied black / bright in the solution treated condition.
Final heat treatment: solution treatment + aged.
Material specification: ASTM A638 (2004), A453.
Stock on hand: round bar 10 - 180mm
TYPICAL CHEMICAL COMPOSITIONS (mass weight - %)
Carbon, C (％): ≤ 0.08
Silicon, Si (％): ≤ 1.00
Manganese, Mn (％): ≤ 2.00
Phosphorus, P (％): ≤ 0.040
Sulfur, S (％): ≤ 0.030
Chromium, Cr (％): 13.5 ~ 16.0
Nickel, Ni (％): 24.0 ~ 27.0
Molybdenum, Mo (％): 1.00 ~ 1.50
Silicon, Si (％): ≤ 1.00
Manganese, Mn (％): ≤ 2.00
Phosphorus, P (％): ≤ 0.040
Sulfur, S (％): ≤ 0.030
Chromium, Cr (％): 13.5 ~ 16.0
Nickel, Ni (％): 24.0 ~ 27.0
Molybdenum, Mo (％): 1.00 ~ 1.50
Titanium, Ti (％): 1.90 ~ 2.35
Vanadium, V (%): 0.10 ~ 0.50
Boron, B (%): 0.001 ~ 0.010
Others (%): Aluminium, Al ≤ 0.35
MECHANICAL PROPERTIES FINAL HEAT TREATMENT
| Test Temperature | Yield 0.2% | Yield 0.2% | Yield 0.2% | Yield 0.2% | Tensile Strength | % Elongation in 2" {50.8mm} | % Reduction of Area | |
|---|---|---|---|---|---|---|---|---|
| 0.2% offset | 0.2% offset | |||||||
| f/c | ksi | mpa | ksi | Mpa | ksi | Mpa | ||
| 70/21 | 90 | 621 | 92 | 655 | 145 | 1000 | 24 | 45 |
| 400/204 | 76 | 524 | 93 | 645 | 143 | 986 | 21 | 52 |
| 800/427 | 72 | 496 | 93 | 641 | 138 | 951 | 19 | 35 |
| 1000/538 | 62 | 427 | 87 | 603 | 131 | 903 | 18 | 31 |
| 1100/593 | 64 | 445 | 90 | 621 | 122 | 841 | 21 | 23 |
| 1200/649 | 62 | 431 | 88 | 607 | 103 | 713 | 13 | 14 |
| 1300/704 | 68 | 472 | 86 | 593 | 86 | 595 | 11 | 10 |
| 1400/760 | 44 | 307 | 62 | 427 | 64 | 441 | 18 | 23 |
| 1500/816 | ||||||||
PRODUCT SHAPES & DIMENSIONS
Round bar & rod & disc (diameter): 6.0 to 800 mm
Square bar & flat bar: 8 to 650 mm
Plate & sheet & strip: 1.0 to 500 mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts, other different shapes based on OEM.
Square bar & flat bar: 8 to 650 mm
Plate & sheet & strip: 1.0 to 500 mm
Length: random length or based on the customer's special requirement.
Forged steel shape: stepped shafts, other different shapes based on OEM.
TYPICAL APPLICATIONS
Chemical equipment, Mechanical parts used in the condition of corrosion resistance.
Bolts and nuts, Pressure vessel.
Chemical equipment, Mechanical parts used in the condition of corrosion resistance.
Bolts and nuts, Pressure vessel.
ADVANTAGE & SUPERIOR SERVICE
20+ years Focus On Special Steel Manufacturing and processing.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
CNC saw cutting.
Marking by stamping or printing.
Third party inspection service.
Export packing / Export documents.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
Stock over 60 grades with a competitive price, along with cutting service for specific requirement.
Customizing special material is welcome.
CNC saw cutting.
Marking by stamping or printing.
Third party inspection service.
Export packing / Export documents.
Transport by Track, Sea, Courier (FedEx, UPS, DHL) and Air Cargo.
We closely cooperate with the professional inspection partners to strictly control the quality and improve the quality manage system, and guarantee the goods delivery each time. It is proved that we are worth of trusting and will be the strategic partner of the supplying chains in the special steels field.
TECHNICAL SALES ASSISTANCE
If you meet further on any technical enquiry or help, pleased to EMAIL our resident team of qualified production engineers - Email:sales@ccsteels.com
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