SSID DOM steel tube ASTM A519

Min. Order:	5 Ton
Payment Terms:	L/C, T/T
Supply Ability:	3000tons
Place of Origin:	Zhejiang

Special Smoothness Inside Surface,SSIS
this tubing is intended for use where the inside surface is of prime importance.
Usually we leave maching allowance for both OD and ID tolerance for further maching purpose.

Mothod of tube forming:
1. Hot-Finished Mechanical Tubing
2. Cold-Worked Mechanical Tubing
3. Rough -Turned Mechanical Tubing
4. Ground Mechanical Tubing

Thermal Treatment:
1) A-Annealed
2) N-Normalized
3) QT-Quenched and Tempered
4) SR-Stress relieved or Finish Anneal  

Steel Grade and Chemical Compositions:

Steel	C	Mn	P	S	Si	Cr	Mo
Grade	max	max	max	max	min
1008	0.10	0.30-0.50	0.040	0.050
1010	0.08-0.13	0.30-0.60	0.040	0.050
1018	0.15-0.20	0.60-0.90	0.040	0.050
1020	0.18-0.23	0.30-0.60	0.040	0.050
1026	0.22-0.28	0.60-0.90	0.040	0.050
1035	0.32-0.38	0.60-0.90	0.040	0.050
1045	0.43-0.50	0.60-0.90	0.040	0.050
4130	0.28-0.33	0.40-0.60	0.040	0.040	0.15-0.35	0.80-1.10	0.15-0.25
4140	0.38-0.43	0.75-1.00	0.040	0.040	0.15-0.35	0.80-1.10	0.15-0.25

Grade	condition	Ultimat	Yield	Elongation	Rockwell
		Strength	Strength		Hardness
		ksi      Mpa	ksi      Mpa	%	B Scale
1020	HR	50        345	32        221	25	55
	CW	70        483	60        414	5	75
	SR	65        448	50        345	10	72
	A	48        331	28        193	30	50
	N	55        379	34        234	22	60
1025	HR	55        379	35        241	25	60
	CW	75        517	65        448	5	80
	SR	70        483	55        379	8	75
	A	53        365	30        207	25	57
	N	55        379	36        248	22	60
1035	HR	65        448	40        276	20	72
	CW	85        586	75        517	5	88
	SR	75        517	65        448	8	80
	A	60        414	33        228	25	67
	N	65       448	40        276	20	72
1045	HR	75        517	45        310	15	80
	CW	90        621	80        552	5	90
	SR	80        552	70        483	8	85
	A	65        448	35        241	20	72
	N	75       517	48        331	15	80
4130	HR	90         621	70        483	20	89
	SR	105        724	85        586	10	95
	A	75        517	55        379	30	81
	N	90        621	60       414	20	89
4140	HR	120        855	90        310	15	100
	SR	120        855	100        689	10	100
	A	80        552	60        414	25	85
	N	120       855	90        621	20	100