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Good Durability Alloy Steel Seamless Pipes Round Steel Tubing Excellent Strength

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Brand Name :	New Era
Model Number :	GOST8734-75 GB/T8163-2009
Certification :	ISO9001,TS16949
Price :	Negotiation
Payment Terms :	T/T
Supply Ability :	3000 tons/month
Delivery Time :	45 days

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Good Durability Alloy Steel Seamless Pipes Round Steel Tubing Excellent Strength

30ХГСА 30HGSA 30CrMnSiA Alloy Steel tubes steel pipes for oil and gas and geological drill pipes

Application:seamless steel tubes for oil and gas and geological drill rods application

30ХГСА 30HGSA 30CrMnSiA

Chemical composition, %

C	Si	Mn	Ni	S	P	Cr	Cu
0.28 - 0.34	0.9 - 1.2	0.8 – 1.1	Up to 0.3	Up to 0.025	Up to 0.025	0.8 - 1.1	Up to 0.3

Temperature of 30HGSA material critical points.

Ac₁ = 760 , Ac₃(Ac_m) = 830 , Ar₃(Arc_m) = 705 , Ar₁ = 670 , Mn = 352

Mechanical properties, Т=20^oС, 30HGSA material.

Assortment	Size	Direction	s_в	s_T	d₅	y	KCU	Heat treatment
-	mm	-	MPа	MPа	%	%	rJ / m²	-
Stick	Æ 25		1080	830	10	45	490	tempering 880^oC, oil, drawback 540^oC, water
Forged pieces			500-750		14

Hardness 30HGSA after annealing ,

HB 10 ^-1 = 229 МPа

Physical properties 30HGSA material.

T	E 10- 5	a 10 6	l	r	C	R 10 9
Degree	MPа	1/Degree	*Watt /(mdegree)**	Kg /m3	J / (kg · degree)	Ohm · м
20	2.15		38	7850		210
100	2.11	11.7	38	7830	496
200	2.03	12.3	37	7800	504
300	1.96	12.9	37	7760	512
400	1.84	13.4	36	7730	533
500	1.73	13.7	34	7700	554
600	1.64	14	33	7670	584
700	1.43	14.3	31		622
800	1.25	12.9	30		693
T	E 10^{- 5}	a 10 ⁶	l	r	C	R 10 ⁹

Technological properties of 40X material.

Weld ability:	limited weld ability
Flocsensitivity:	sensitive
Tendency to the temper brittleness:	There is such a tendency

Designations:

Mechanical properties:
s_в	- Short-term breaking point , [МPа]
s_T	- Proportional limit (yield strength for residual deformation), [МPа]
d₅	- Elongation at the time of abruption , [ % ]
y	- Contraction , [ % ]
KCU	- Impact strength , [ кJ / m²]
HB	- Brinnel hardness , [МPа]

Physical properties:
T	- Temperature when given values where received , [Degree]
E	- Coefficient of elasticity of the first type , [МPа]
a	- Coefficient of temperature (linear) expansion (interval 20^o - T ) , [1/Degree]
l	- Heat conductivity (heat capacity) , [Watt / (m · degree)]
r	- Material density , [kg / m³]
C	- Specific heat capacity (interval 20^o - T ), [J / (kg · degree)]
R	- Resistivity, [ohm · m]

Weld Ability:

Without limits - welding is carried without heating and further heat treatment

Limited weld ability – Welding is possible at the heating up to 100-120°C and further heat treatment

Difficult weld ability - Additional operations are necessary to get good weld joints: heating up to 200-300°C during welding, heat treatment after welding - annealing

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Good Durability Alloy Steel Seamless Pipes Round Steel Tubing Excellent Strength

Product Tags:

seamless alloy steel tube

alloy steel seamless tubes

alloy round tube

Good Durability Alloy Steel Seamless Pipes Round Steel Tubing Excellent Strength

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