Specifications

Standard: ASTM A320 L7 /ASTM A193;

1..Material:Carbon steel or alloy steel;

2.Advanced equipment and professional production.

 

Specifications:

 

1.Main Size: 4 inch,length:35mm~260mm or customized;

  

2.Standard: ASTM A320 L7 /ASTM A193;

  

3.Material:Carbon steel or alloy steel;

 

 

4.Surface finishes: Black oxygenation,black phosphated,zinc-plated,plain,etc. ;

 

5.Usage: steel structures,such as multi-floor&high-rise steel structure buildings,industrial buildings,high way,railway,steel steam,tower,power station,airport and other structure workshop frames

 

 

L7 Alloy steel	AISI 4140/4142 Quenched and tempered

 

 

Grade	Size	Tensile, ksi, min	Yield, ksi, min	Charpy Impact 20-ft-lbf @ temp	Elong, %, min	RA, %, min
L7	Up to 21/2	125	105	-150° F	16	50

 

Grade	Nuts	Washers
L7	A194 Grade 4 or 7	F436

 

 

Specification	Material	Nominal Size (In.)	Mechanical Properties
			Minimum Tempering Temperature °F	Elongation in 4D, min, %	Yield Strength, min, 0.2 % offset, ksi	Tensile Strength, min, ksi	Reduction of Area, min, %	Hardness, max	Finish Treatment
ASTM A193 Grade B7	AISI 4140, 4142, 4105	1/2 to 2-1/2	1100	16	105	125	50	321HB or 35HRC	Black Oxide Zinc Plated Nickel Plated Phosphated HDG Dacromet Cadmium Plated PTFE(Teflon)
		2-1/2 to 4			95	115
ASTM A193 Grade B7M	AISI 4140, 4142, 4105	1/2 to 4	1150	18	80	100		235HB or 99HRB
ASTM A193 Grade B16	CrMoVa Alloy Steel	1/2 to 2-1/2	1200	18	105	125	50	321HB or 35HRC
		2-1/2 to 4		17	95	110	45
Specification	Material	Nominal Size (In.)	Minimum Tempering Temperature °F	Proof Load Stress (ksi)	Hardness Rockwell		Nut Type
					Min	Max
ASTM A194 Grade 2H	Medium Carbon Steel, Quenched and Tempered	1/2 to 4	850	175	C24	C35	Heavy hex nut Hex thin nut Hex nut
ASTM A194 Grade 2HM	Medium Carbon Steel, Quenched and Tempered	1/2 to 4	1150	150	159	235
ASTM A194 Grade 4	Medium Carbon Alloy Steel, Quenched and Tempered	1/2 to 4	1100	175	C24	C35
ASTM A194 Grade 7	Medium Carbon Alloy Steel, Quenched and Tempered	1/2 to 4	1100	175	C24	C35
ASTM A194 Grade 7M	Medium Carbon Alloy Steel, Quenched and Tempered	1/2 to 4	1150	150	159	235

Specification	Material	Nominal Size (In.)	Mechanical Properties
			Minimum Tempering Temperature °F	Elongation in 4D, min, %	Yield Strength, min, 0.2 % offset, ksi	Tensile Strength, min, ksi	Reduction of Area, min, %	Hardness, max	Finish Treatment
ASTM A193 Grade B7	AISI 4140, 4142, 4105	1/2 to 2-1/2	1100	16	105	125	50	321HB or 35HRC	Black Oxide Zinc Plated Nickel Plated Phosphated HDG Dacromet Cadmium Plated PTFE(Teflon)
		2-1/2 to 4			95	115
ASTM A193 Grade B7M	AISI 4140, 4142, 4105	1/2 to 4	1150	18	80	100		235HB or 99HRB
ASTM A193 Grade B16	CrMoVa Alloy Steel	1/2 to 2-1/2	1200	18	105	125	50	321HB or 35HRC
		2-1/2 to 4		17	95	110	45
Specification	Material	Nominal Size (In.)	Minimum Tempering Temperature °F	Proof Load Stress (ksi)	Hardness Rockwell		Nut Type
					Min	Max
ASTM A194 Grade 2H	Medium Carbon Steel, Quenched and Tempered	1/2 to 4	850	175	C24	C35	Heavy hex nut Hex thin nut Hex nut
ASTM A194 Grade 2HM	Medium Carbon Steel, Quenched and Tempered	1/2 to 4	1150	150	159	235
ASTM A194 Grade 4	Medium Carbon Alloy Steel, Quenched and Tempered	1/2 to 4	1100	175	C24	C35
ASTM A194 Grade 7	Medium Carbon Alloy Steel, Quenched and Tempered	1/2 to 4	1100	175	C24	C35
ASTM A194 Grade 7M	Medium Carbon Alloy Steel, Quenched and Tempered	1/2 to 4	1150	150	159	235

Specification	Material	Nominal Size (In.)	Mechanical Properties
			Minimum Tempering Temperature °F	Elongation in 4D, min, %	Yield Strength, min, 0.2 % offset, ksi	Tensile Strength, min, ksi	Reduction of Area, min, %	Hardness, max	Finish Treatment
ASTM A193 Grade B7	AISI 4140, 4142, 4105	1/2 to 2-1/2	1100	16	105	125	50	321HB or 35HRC	Black Oxide Zinc Plated Nickel Plated Phosphated HDG Dacromet Cadmium Plated PTFE(Teflon)
		2-1/2 to 4			95	115
ASTM A193 Grade B7M	AISI 4140, 4142, 4105	1/2 to 4	1150	18	80	100		235HB or 99HRB
ASTM A193 Grade B16	CrMoVa Alloy Steel	1/2 to 2-1/2	1200	18	105	125	50	321HB or 35HRC
		2-1/2 to 4		17	95	110	45
Specification	Material	Nominal Size (In.)	Minimum Tempering Temperature °F	Proof Load Stress (ksi)	Hardness Rockwell		Nut Type
					Min	Max
ASTM A194 Grade 2H	Medium Carbon Steel, Quenched and Tempered	1/2 to 4	850	175	C24	C35	Heavy hex nut Hex thin nut Hex nut
ASTM A194 Grade 2HM	Medium Carbon Steel, Quenched and Tempered	1/2 to 4	1150	150	159	235
ASTM A194 Grade 4	Medium Carbon Alloy Steel, Quenched and Tempered	1/2 to 4	1100	175	C24	C35
ASTM A194 Grade 7	Medium Carbon Alloy Steel, Quenched and Tempered	1/2 to 4	1100	175	C24	C35
ASTM A194 Grade 7M	Medium Carbon Alloy Steel, Quenched and Tempered	1/2 to 4	1150	150	159	235

 

 

 

 

 

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