ASTM F2281

ASTM F2281 Bolting Specification

Stainless Steel and Nickel Alloy Bolts, Hex Cap Screws, and Studs, for Heat Resistance and High Temperature Applications

Overview

High-Temperature Stainless Steel and Nickel Alloy Fasteners by Adfast Components LTD

Adfast Components LTD proudly offers stainless steel and nickel alloy bolts, hex cap screws, and studs, designed to meet ASTM F2281 specifications. These fasteners, with a diameter of 1/4 inch and larger, are engineered for applications requiring resistance to heat and high temperatures up to 1800°F (982°C). Crafted from high-performance materials, our products are ideal for industries demanding durability in extreme conditions, including corrosive environments.

Our fasteners are manufactured using premium-grade alloys sourced from standards such as A276, A484/A484M, A493, A564/A564M, A582/A582M, and B637. These materials ensure exceptional mechanical and chemical properties, making them suitable for high-temperature applications. Trust Adfast Components LTD for reliable solutions tailored to your industry’s needs.

Related Specifications

Classification

Alloy Grade	UNS Designation
ASTM F2281 304 Type I Class A	S30400
ASTM F2281 304L Type I Class A	S30403
ASTM F2281 316 Type I Class A	S31600
ASTM F2281 316L Type I Class A	S31603
ASTM F2281 410 Type I Class B	S41000
ASTM F2281 416 Type I Class B	S41600
ASTM F2281 431 Type I Class B	S43100
ASTM F2281 430 Type I Class C	S43000
ASTM F2281 430F Type I Class C	S43020
ASTM F2281 309 Type II	S30900
ASTM F2281 310 Type II	S31000
ASTM F2281 321 Type II	S32100
ASTM F2281 330 Type II	N08330
ASTM F2281 347 Type II	S34700
ASTM F2281 660 Type III Class A	S66286
ASTM F2281 718 Type III Class A	N07718
ASTM F2281 600Type III Class B	N06600
ASTM F2281 601 Type III Class C	N06601

Chemical Composition

Alloy	C	Mn	P	S	Si	Cr	Ni	Cu	Mo	Other
ASTM F2281 304 Type I, Class A	0.08	2.00	0.045	0.030	1.00	18.0-20.0	8.0-10.5	1.00	. . .	. . .
ASTM F2281 304L Type I, Class A	0.03	2.00	0.045	0.030	1.00	18.0-20.0	8.0/12.0	1.00	. . .	. . .
ASTM F2281 316 Type I, Class A	0.08	2.00	0.045	0.030	1.00	16.0-18.0	10.0-14.0	. . .	2.00-3.00	. . .
ASTM F2281 316L Type I, Class A	0.03	2.00	0.045	0.030	1.00	16.0-18.0	10.0-14.0	. . .	2.00-3.00	. . .
ASTM F2281 410 Type I, Class A	0.15	1.00	0.040	0.030	1.00	11.5-13.5	. . .	. . .	. . .	. . .
ASTM F2281 416 Type I, Class A	0.15	1.25	0.060	0.15 min	1.00	12.0-14.0	. . .	. . .	0.60	. . .
ASTM F2281 431 Type I, Class A	0.20	1.00	0.040	0.030	1.00	15.0-17.0	1.25-2.50	. . .	. . .	. . .
ASTM F2281 430 Type I, Class A	0.12	1.00	0.040	0.030	1.00	16.0-18.0	. . .	. . .	. . .	. . .
ASTM F2281 430F Type I, Class A	0.12	1.25	0.060	0.15 min	1.00	16.0-18.0	. . .	. . .	0.60	. . .
ASTM F2281 309 Type II	0.20	2.00	0.045	0.030	1.00	22.0-24.0	12.0-15.0	. . .	. . .	. . .
ASTM F2281 310 Type II	0.25	2.00	0.045	0.030	1.50	24.0-26.0	19.0-22.0	. . .	. . .	. . .
ASTM F2281 321 Type II	0.08	2.00	0.045	0.030	1.00	17.0-19.0	9.0-12.0	. . .	. . .	Ti5 × C min
ASTM F2281 330 Type II	0.08	2.00	0.030	0.030	0.75-1.50	17.0-20.0	34.0-37.0	. . .	. . .	. . .
ASTM F2281 347 Type II	0.08	2.00	0.045	0.030	1.00	17.0-19.0	9.0-13.0	. . .	. . .	Cb + Ta 10 × C min
ASTM F2281 600 Type III, Class A	0.10	1.00	. . .	0.015	0.50	14.0-17.0	72.0 min	0.50	. . .	Fe 6.0/10.0
ASTM F2281 601 Type III, Class A	0.10	1.00	. . .	0.015	0.50	21.0-25.0	58.0-63.0	1.00	. . .	Al 1.0/1.7 Fe remainder
ASTM F2281 660 Type III, Class B	0.08	2.00	0.040	0.030	1.00	13.5-16.0	24.0-27.0	. . .	1.00-1.75	Ti 1.90-2.30 V 0.10-0.50 Al 0.35 max B 0.003-0.010 Fe remainder
ASTM F2281 718 Type III, Class C	0.08	0.35	0.015	0.015	0.35	17.0-21.0	50.0-55.0	0.30	2.80-3.30	Ti 0.65-1.15 Co 1.00 max Al 0.20-0.80 B 0.006 max Cb + Ta 4.75-5.50 Fe remainder

Mechanical Requirements

Room Temperature
Elevated Temperature
Heat Treatment

Alloy Grades	Condition	Marking	Nominal Diameter, in.	Full-Size Tests		Rockwell Hardness	Machined Specimen Tests
Alloy Grades	Condition	Marking	Nominal Diameter, in.	Tensile Strength, min, ksi	Yield Strength, min, ksi	Rockwell Hardness	Tensile Strength, min, ksi	Yield Strength, min, ksi	Elongation 4D, min %
ASTM F2281 304, 304L Type I, Class A	A	F1A	All diameters	75	30	65 to 95 HRB	75	30	30
	CWA	F1B	All diameters	75	30	65 to 95 HRB	75	30	30
	HWA	F1C	All diameters	75	30	65 to 95 HRB	75	30	30
ASTM F2281 316, 316L Type I, Class A	A	F1D	All diameters	75	30	65 to 95 HRB	75	30	30
	CWA	F1E	All diameters	75	30	65 to 95 HRB	75	30	30
	HWA	F1F	All diameters	75	30	65 to 95 HRB	75	30	30
ASTM F2281 410, 416 Type I, Class B	H	F1G	Up to 4 diameter	110	85	20 to 30 HRC	110	85	15
ASTM F2281 410, 416 Type I, Class B	HT	F1H	Up to 4 diameter	160	120	34 to 45 HRC	160	120	12
ASTM F2281 431	H	F1I	All diameters	125	100	25 to 32 HRC	125	100	15
ASTM F2281 431	HT	F1J	All diameters	180	140	40 to 48 HRC	180	140	10
ASTM F2281 430, 430F Type I, Class C	A	F1K	All diameters	55	30	65 to 95 HRB	50	25	…
	CWA	F1L	All diameters	55	30	65 to 95 HRB	50	25	…
	HWA	F1M	All diameters	55	30	65 to 95 HRB	50	25	…
ASTM F2281 309, 310 Type II, Class A	A	F2A	All diameters	75	30	85 to 95 HRB	75	30	30
	CWA	F2B	All diameters	75	30	65 to 95 HRB	75	30	30
	HWA	F2C	All diameters	75	30	65 to 95 HRB	75	30	30
ASTM F2281 321, 347 Type II, Class A	A	F2D	All diameters	75	30	85 to 95 HRB	75	30	30
	CWA	F2E	All diameters	75	30	65 to 95 HRB	75	30	20
	HWA	F2F	All diameters	75	30	65 to 95 HRB	75	30	30
ASTM F2281 330 Type II, Class A	A	F2G	All diameters	75	30	85 to 95 HRB	75	30	30
	CWA	F2H	All diameters	75	30	65 to 95 HRB	75	30	20
	HWA	F2I	All diameters	75	30	65 to 95 HRB	75	30	30
ASTM F2281 600, 601 Type III, Class A	A	F3A	All diameters	80	25	65 to 85 HRB	75	25	35
	CWA	F3B	All diameters	80	25	65 to 85 HRB	75	25	35
	HWA	F3C	All diameters	80	25	65 to 85 HRB	75	25	35
ASTM F2281 660 Type III, Class B	Ah4	F3D	All diameters	130	85	22 to 37 HRC	130	85	15
	Ah4	F3E	All diameters	130	85	22 to 37 HRC	130	85	15
	Ah4	F3F	All diameters	130	85	22 to 37 HRC	130	85	15
ASTM F2281 718 Type III, Class C	AH4	F3G	All diameters	185	150	36 to 48 HRC	180	150	12

Alloy Grade	Temperature		Tensile Strength, ksi, min	Yield 0.2 % Strength, ksi, min	Elongation in 2 in., %, min
Alloy Grade	°F	°C	Tensile Strength, ksi, min	Yield 0.2 % Strength, ksi, min	Elongation in 2 in., %, min
ASTM F2281 600 Class A	600	316	89.0	34.0	45.0
	1000	538	82.0	33.0	42.0
	1400	760	37.0	26.0	70.0
	1800	982	11.0	5.0	115.0
ASTM F2281 601 Class A	800	427	104.0	54.5	36.0
	1000	538	94.8	51.5	34.0
	1200	649	73.5	46.5	32.0
	1400	760	37.3	36.6	88.0
	1800	982	8.7	7.5	173.0
ASTM F2281 660 Class B	800	427	138.0	93.0	18.0
	1000	538	131.0	87.5	18.0
	1100	593	122.0	90.0	21.0
	1200	649	104.0	88.0	13.0
	1300	704	86.5	86.0	11.0
	1400	760	64.0	62.0	18.0
	1500	816	36.5	33.0	68.0
ASTM F2281 718 Class C	600	316	184.0	156.0	20.0
	1000	538	173.0	148.0	16.0
	1200	649	145.0	125.0	12.0
	1400	760	124.0	116.0	5.0

Alloy Grade	Safe Scaling Temperature at Continuous Service Application	Safe Scaling Temperature at Continuous Service Application
ASTM F2281 304/304L Type I, Class A	1600°F (871°C)	…
ASTM F2281 316/316L Type I, Class A	…	…
ASTM F2281 410/416 Type I, Class B	1200°F (649°C)	…
ASTM F2281 431 Type I, Class B	1300°F (704°C)	…
ASTM F2281 430/430F Type I, Class C	1500°F (816°C)	…
ASTM F2281 309 Type II	2000°F (1093°C)	1850°F (1010°C)
ASTM F2281 310 Type II	2100°F (1149°C)	2000°F (1093°C)
ASTM F2281 321 Type II	1600°F (871°C)	1650°F (899°C)
ASTM F2281 330 Type II	2200°F (1204°C)	2200°F (1204°C)
ASTM F2281 347 Type II	1600°F (871°C)	1650°F (871°C)
ASTM F2281 600 Type III, Class A	1800°F (980°C)	…
ASTM F2281 601 Type III, Class A	2000°F (1095°C)	…
ASTM F2281 660 Type III, Class B	1300°F (704°C)	…

Type	Class	Condition
I	A	A, CWA, HWA
I	B	H, HT
I	C	A, CWA, HWA
II	…	A, CWA, HWA
III	A	A, CWA, HWA
III	B	Ah4, Ah4 or Ah4
III	C	AH4

Condition	Process
A	Machined from annealed or solution-annealed stock thus retaining the properties of the original material
CWA	Cold formed from annealed or solution-annealed stock and then re-annealed
HWA	Hot formed from annealed or solution-annealed stock and then re-annealed
H	Hardened and tempered at 1050°F (565°C) minimum
HT	Hardened and tempered at 525°F (274°C) minimum
Ah4	Solution treated at 1850°F (1010°C) and precipitation hardened (aging)
Ah4	Solution treated at 1700°F (927°C) and precipitation hardened (aging)
Ah4	Solution treated at 1850°F (1010°C) and double aged
AH4	Solution treated at 1725°F (941°C) to 1850°F (1010°C) and precipitation hardened (aging)

Coating Specifications

Renowned Brands

Bolting Components Marking

Product Shall be Marked with our manufacturing trade mark Adfast Component LTD along with the designated Grade.
Grade and manufacturer’s identification symbols shall be applied to one end of studs and to the heads of bolts and screws of all sizes. (If the available area is inadequate, the grade symbol may be marked on one end and the manufacturer’s identification symbol marked on the other end.) For bolts and screws smaller than 1⁄4 in. [6 mm] in diameter and studs smaller than 3⁄8 in. [10 mm] in diameter and for 1⁄4 in. [6 mm] in diameter studs requiring more than a total of three symbols, the marking shall be a matter of agreement between the purchaser and the manufacturer.

Dimensional Standards

ASME Bolt Dimensional Standards

B18.31.2 Imperial Continious Thread, Double End Reduced & Full Body Studs
B18.31.1M Metric Continious Thread, Double End Reduced & Full Body Studs
B16.5 Imperial Full Thread Stud Bolts
B16.5 Metric Full Thread Stud Bolts
B18.2.1 Imperial Square and Hex Bolts and Screws
B18.31.3 Threaded Rods (Inch Series)

Certification

Testing Standards

E18 Test Methods for Rockwell Hardness of Metallic Materials
E21 Test Methods for Elevated Temperature Tension Tests of Metallic Materials
E112 Test Methods for Determining Average Grain Size
E139 Test Methods for Conducting Creep, Creep-Rupture,and Stress-Rupture Tests of Metallic Materials
E150 Recommended Practice for Conducting Creep and Creep-Rupture Tension Tests of Metallic Materials Under Conditions of Rapid Heating and Short Times
E151 Recommended Practice for Tension Tests of Metallic Materials at Elevated Temperatures with Rapid Heating and Conventional or Rapid Strain Rates
E292 Test Methods for Conducting Time-for-Rupture Notch Tension Tests of Materials
E328 Test Methods for Stress Relaxation for Materials and Structures
E566 Practice for Electromagnetic (Eddy Current) Sorting of Ferrous Metals
E709 Guide for Magnetic Particle Testing
F606/F606M Test Methods for Determining the Mechanical Properties of Externally and Internally Threaded Fasteners, Washers, Direct Tension Indicators, and Rivets
F1940 Test Method for Process Control Verification to Prevent Hydrogen Embrittlement in Plated or Coated Fasteners
A962/A962M Specification for Common Requirements for Bolting Intended for Use at Any Temperature from Cryogenic to the Creep Range
A788/A788M for Steel Forgings, General Requirements

Threading Specs

Supplementary Requirements

S1	Shipment Lot Testing
S2	Additional Tests
S3	Source Inspection
S4	Heat Control
S5	Permeability
S6	Corrosion Resistance Tests
S7	Passivation
S8	High Temperature Tests

Product

Precision Components

Contract Manufacturing

Fastener

Resources

materials

Technical