ASTM A453 Grade 660,GR 660,grade 660A,ASTM A638 Gr 660 A638 Gr.660 660B,660C,660D Forged Forging Round Bars Hollow Bars Shafts Square rectangular rectangle Blocks Discs Disks Plates Flat Bars -

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ASTM A453 Grade 660,GR 660,grade 660A,ASTM A638 Gr 660 A638 Gr.660 660B,660C,660D Forged Forging Round Bars Hollow Bars Shafts Square rectangular rectangle Blocks Discs Disks Plates Flat Bars

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We are professional ASTM A453 Grade 660,GR 660,grade 660A,ASTM A638 Gr 660 A638 Gr.660 660B,660C,660D Forged Forging Round Bars Hollow Bars Shafts Square rectangular rectangle Blocks Discs Disks Plates Flat Bars from china

Material Chemical Composition Requirements

ELEMENT	%	%	%	%	%
ELEMENT	Grade 660	Grade 651	Grade 662	Grade 665	Grade 668
Carbon	0.08 max	0.28-0.35	0.08 max	0.08 max	0.08 max
Manganese	2.00 max	0.75-1.5	0.40-1.00	1.25-2.00	2.00 max
Phosphorus, max	0.040 max	0.040 max	0.040 max	0.040 max	0.040 max
Sulfur, max	0.030 max	0.030 max	0.030 max	0.030 max	0.030 max
Silicon	1.00 max	0.30-0.80	0.40-1.00	0.1-0.80	1.00 max
Nickel	24.0-27.0	8.0-11.0	24.0-28.0	24.0-28.0	17.5-21.5
Chromium	13.5-16.0	18.0-21.0	12.0-15.0	12.0-15.0	13.5-16.0
Molybdenum	1.00-1.50	1.00-1.75	2.0-3.50	1.25-2.25	1.50 max
Tungsten	...	1.00-1.75	...	...	...
Titanium	1.9-2.35	0.1-0.35	1.80-2.10	2.70-3.30	2.20-2.80
Columbium *	...	0.25-0.6	...	...	...
Aluminum	0.35 max		0.35 max	0.25 max	0.50 max
Vanadium	0.10-0.50		...	...	0.50 max
Boron	0.001-0.010		0.001-0.010	0.01-0.07	0.001-0.010
Copper		0.50 max	0.50 max	0.25 max	...

Mechanical Properties Requirements

Size	Class	Tensile, Mpa	Yield, Mpa	Elong. %, min	RA %, min
Grade 660	A, B , & C	895 min	585 min	15	18
	D	895 min	725 min	15	18
Grade 651	A	690 min	485 min	18	35
Grade 651	A	690 min	415 min	18	35
	B	655 min	415 min	18	35
	B	655 min	345 min	18	35
Grade 662	A	895 min	585 min	15	18
	B	860 min	550 min	15	18
Grade 665	A	1170 min	830 min	12	15
	B	1070 min	830 min	12	15
Grade 665	A & B	895 min	858 min	15	18

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