Grade 660 Type 1 Stockist, Grade 660 Type 1 Equivalent Steel
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Grade 660 Type 1
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Standard specification for Precipitation hardening iron-base superalloy bar, B638 Grade 660 Type 1 forgings, and forging stock for high-temperature service Grade 660 Type 1 data sheet, Grade 660 Type 1 Chemical compositions, mechanical properties from Steel making, ESR melted, Blooming, Forging, Hot rolling, Heat treatment, Straightening, Ultrasonic test, Cold working or Machined. All of these materials conform to Military standard, nuclear power. Technical specification ASTM B638 - 2010.
 
TECHNICAL SPECIFICATION - ASTM B638 GRADE 660  type 1

TECHNICAL SPECIFICATION: ASTM B638 - 2010
OFFICIAL TEST CERTIFICATE: issued by
TUV - SGSBV

MATERIAL CATEGORY:  Precipitation hardening iron base superalloy
CHEMICAL COMPOSITION (WEIGHT %)
C (%):     ≤ 0.08
Si (%):    ≤ 1.00
Mn (%):   ≤ 2.00
P (%) ≤:  0.040
S (%) ≤:  0.030
Cr (%):    13.5 ~ 16.0
Ni (%):     24.0 ~ 27.0
Mo (%):   1.00 ~ 1.50
Ti (%):     1.90 ~ 2.35
Cu (%):    -
Al (%):     ≤ 0.35
V (%):      0.10 ~ 0.50
B (%):      0.0010 ~ 0.010
Fe (%):     Remainder
MECHANICAL PROPERTIES UNDER ROOM TEMPERATURE
Form: bar, forgings, forging stock
Condition: solution treated, at 900 +/- 15 Deg. hold 2h, oil or water cooling
                precipitation hardening 705 ~ 760 Deg. hold 16h, air cooling or furnace cooling
Tensile strength,σb/≥ MPa: 895
Yield strength, σ0.2/≥ MPa: 585
Elongation, δ ≥(%): 15.0
Reduction of area, ф ≥ (%): 18.0
Hardness | HBW: 248 min.

TYPICAL APPLICATIONS
Superalloy is widely used to produce the high temperature components for gas turbine in the field of aviation, naval vessels and industry, such as turbine blade, guide blade, turbine disc, high pressure compressor disc, combustor, and also production of energy conversion devices, such as aerospace craft, rocket motor, nuclear reactor, petrochemical equipments, coaly transforming and so on.
Heat treating fixture
Furnace muffle
Nuclear reactor
Turbine engine parts - mechanical gears, gear shaft, main axis, blade
Mechanical parts - bolt and nut, fastener
Gas turbine
Turbine blade
Fuel nozzle
Heat treatment furnace flask and components, especially in the carbonization.
These materials must stand up to high heat, extreme oxidation potential and recycling.

FORMS AND SHAPES
Round bar (Diameter): 0.50mm to 500mm
Square bar / Flat bar: 3mm to 500mm
Forging piece: stepped shafts with flanks / discs /tubes /slugs /donuts /cubes /other different shapes based on OEM.

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