ASTM A453 Grade 660 Class a/B/C/D Bolts Stud Bolts Nuts & Washers

• Material: Stainless Steel
• Type: Round Head
• Connection: Common Bolt
• Head Style: Round
• Standard: DIN, ANSI, JIS, GOST
• Grade: 8.8
• Application: Machinery
• Finish: Polishing
• Other Material: A453 Gr.660, Gr.651, Gr.662, Gr.665, Uns S66286
• Transport Package: Plywood Box, Plywood Case, Wooden Pallet
• Trademark: C&N
• Origin: China
• Production Capacity: 100tons/Month

Product Description

Hex Bolts Nuts washers U bolt, Parallel Key, Flange, stud bolts ,socke head screws, flat head screws,countersunk socket screws ,slotted head screws ,threaded rod ,chemical anchors, set screws of dog point, flat point, and other non standard process parts if with drawing.
 
Standards: GB ,ANSI/AMSE, DIN, JIS and BS,UNI etc
In stock items:  310S Hex nuts M6 - M20 AL6XN hex nut M6 904L Hex nuts M6 to M20, SAF2205 Hex nuts M6 to M20
                              duplex 2205 flat washers , hastelloy C276 M10 nuts and M10 flat washers
 
Metric size: M6 to M100
Inch size : 1/4" to 2 1/2
Nut: M3-M64 (hexagonal, flange)
Threaded Rod:4-3000mm (all thread, double end thread)

ASTM A453/A453M Grade 660 Class A/B/C/D Stainless Steel Bolting for High Temperature Applications

We offer precisely made Stud Bolts, Hex Bolts, Heavy Hex Bolts, Socket Head Cap Screws, Threaded Rods, Nuts & Washers as per ASTM A453 Grade 600 Class A/B/C & D. We produce these Grade 660 Bolts from 3/8" to 4" in imperial and upto M100 in metric sizes. Larger size Bolts can be made to order as per request. We also undertake custom made boltings in A453 Gr 660 as per drawing. We stock premium and surplus bar stock in Grade 660 (UNS S66286 ; Alloy A286) for quick manufacturing and shorter delivery periods. These ASTM A453 Grade 660 Class A/B/C/D Bolts are supplied with EN 10204 Type 3.1 MTC. We offer Rupture Test Facility for sufficient quantity order.

 

ASTM A453 Grade 660 Tensile Class

Property	Description
Class A	...
Class B	...
Class C	...
Class D	...

 

ASTM A453 Grade 660 Chemical Composition (UNS S66286)

Element	Content %
Grade 660 UNS S66286
Carbon	0.08 max
Manganese	2.00 max
Phosphorus	0.04 max
Sulfur	0.03 max
Silicon	1.00 max
Nickel	24.00 - 27.00
Chromium	13.50 - 16.00
Molybdenum	1.00 - 1.50
Titanium	1.90 - 2.35
Aluminum	0.35 max
Vanadium	0.10 - 0.50
Boron	0.001 - 0.010

 

ASTM A453 Grade 660 Class A/B/C/D Mechanical Properties

Grade	Class	Tensile Strength	Yield Strength	Elongation in 4D, min, %	Reduction of Area, min, %	Brinell Hardness Number	Approximate Rockwell Hardness, B & C
Ksi	Mpa	Ksi	Mpa	min	max
Grade 660	A, B and C	130	895	85	585	15	18	248-341	24 HRC	37 HRC
Grade 660	D	130	895	105	725	15	18	248-341	24 HRC	35 HRC

 

ASTM A453 Grade 660 Class A/B/C/D Heat Treatment Requirements

Grade	Class	Solution Treatment	Hardening Treatment
Grade 660	A	1650 +/- 25° F [900 +/- 14°C], hold 2 hr, min and liquid quench	1325 +/- 25° F [720 +/- 14°C], hold 16 hr, air cool
Grade 660	B	1800 +/- 25° F [980 +/- 14°C], hold 1 hr, min and liquid quench	1325 +/- 25° F [720 +/- 14°C], hold 16 hr, air cool
Grade 660	C	1800 +/- 25° F [980 +/- 14°C], hold 1 hr, min and oil quench	1425 +/- 25° F [775 +/- 14°C], hold 16 hr, air cool, followed by 1200 +/- 25°F [650 +/- 14°C], air cool
Grade 660	D	1650 +/- 25° F [900 +/- 14°C], hold 2 hr, min and liquid quench 1800 +/- 25° F [980 +/- 14°C], hold 1 hr, min and liquid quench	1325 +/- 25° F [720 +/- 14°C], hold 16 hr, air cool, If required to achieve properties, second age: 1200 +/- 25°F [650 +/- 14°C], air cool

 

ASTM A453 Grade 660 Class A/B/C/D Stress Rupture Requirements

Grade	Class	Test Temperature	Stress, Min	Time to Rupture, min, h^A	Elongation, min, %
°F	°C	Ksi	Mpa
Grade 660	A, B and C	1200	650	56	385	100	5

 

Note: The combination bar specimen shall be tested continuously at the temperature and at the minimum stress specified or at a greater stress and shall rupture in a time not less than than specified.

 

ASTM A453 Grade 660 Class A/B/C/D Marking Requirements

Grade	Class A	Class B	Class C	Class D
Grade 660	BPF 660A	BPF 660B	BPF 660C	BPF 660D NR