A335 P5 pipes are also known as ASME SA335 P5 pipes, is a seamless ferritic alloy-steel pipe that mainly has high-temperature applications. The UNS designation for this  grade P5 is K41545. 

The main composition of ASTM A335 Grade P5 pipes is the addition of chromium and molybdenum.  Chromium increase high-temperature strength by enhancing resistance to oxidation resulting in improved Yield, Tensile strength and hardness at room temperature. The addition of molybdenum further increase the strength of the pipe, increased elastic limit, improved wear resistance, good impact values and superior hardness values, it also avoids softening of steel, resisting grain growth and makes pipes less susceptible to embrittlement. This allows these pipes to be used in highly corrosive environments. It also has high creep and pitting resistance. 

These pipes can be fully annealed, isotherm annealed, normalized or tempered. The addition of nickel and manganese enhances the hardness of pipes. This allows for excellent performance under high-temperature conditions. The absolute roughness of P5 pipes is very low which makes their dimensions highly precise. This allows for calculation precise applications where slight alterations can lead to major errors. 

ASTM A335 P5 pipes  are highly adaptable and can be used in Refinery, Machine building, Oil and Gas, Powe generation, Petrochemical, Gas processing, fertilizer and sugar industries.

The Alloy Steel P5 Material can come in different end types such as treaded, beveled or plain ends. The pipes are used to produce rigid structures and to have corrosion resistant structures. The ASTM A335 P5 Pipe has high tensile strength and the corrosion resistance in combination provides high mechanical properties when annealed. The heat treatment methods are not suitable for the p5 Alloy Steel Pipes as they are non – heat treatable steel grades. The material is also magnetic in nature. It is a suitable material for high temperature service applications.

ASME SA 335 Grade P5 ERW Pipe Schedule

O.D. x Thickness(mm)	O.D x Thickness(mm)	O.D x Thickness(mm)
38.1 x 3.2	57.0 x 4.9	76.2 x 4.0
38.1 x 4.0	57.0 x 6.3	76.2 x 5.0
38.1 x 6.3	57.0 x 7.9	76.2 x 6.3
42.4 x 3.2	60.3 x 3.2	82.5 x 4.5
42.4 x 4.0	60.3 x 3.6	88.9 x 3.2
44.5 x 3.2	60.3 x 5.0	88.9 x 3.6
44.5 x 6.3	63.5 x 3.2	88.9 x 4.0
48.3 x 3.2	63.5 x 3.6	101.6 x 3.6
48.3 x 3.6	63.5 x 4.0	101.6 x 4.5
50.8 x 4.5	63.5 x 6.3	101.6 x 6.3
51.0 x 3.2	63.5 x 7.9	114.3 x 3.6
51.0 x 3.6	70.0 x 3.2	114.3 x 5.0
51.0 x 6.3	70.0 x 3.6	139.7 x 4.0
57.0 x 3.2	70.0 x 6.3	139.7 x 5.0
57.0 x 3.6	76.2 x 3.6	139.7 x 6.3

Material Specification Chart of Alloy Steel P5 Material

Size in Inch	1/8NB TO 24NB inch
ASTM Standards	ASTM A 335, and ASME SA 335
Type	Seamless Pipe
Specialized in Size	Large Diameter Size
Outer Dimensions Chart	19.05milimeter – 114.3milimeter
Wall Thickness Chart	2.0milimeter – 14 milimeter
Length in milimeter	max 16000milimeter
Schedule Chart	Schedule 20 - XXS up to 250 milimeter thk.
Pipe Form	Round, Rectangular, Square, Hydraulic Etc.
Length	Single, Double Random & Cut to Length.
Pipe & Tube End	Plain, Beveled, Treaded.

ASTM A335 P5 Pipe Sizes In Mm

ASTM A335 P5 Seamless Pipe OD	Pipe WT	in.	Sch	Kg/m
mm	mm
13.72	1.65	1/4	10S	0.5
13.72	2.24	1/4	40S	0.64
13.72	3.02	1/4	80S	0.81
17.15	1.65	3/8	10S	0.64
17.15	2.31	3/8	40S	0.86
17.15	3.2	3/8	80S	1.12
21.34	2.11	1/2	10S	1.02
21.34	2.77	1/2	40S	1.29
21.34	3.73	1/2	80S	1.65
26.67	2.11	3/4	10S	1.3
26.67	2.87	3/4	40S	1.71
26.67	3.91	3/4	80S	2.23
33.4	2.77	1	10S	2.13
33.4	3.38	1	40S	2.54
33.4	4.55	1	80S	3.29
33.4	6.352)	1	160	4.3
42.16	2.77	1¼	10S	2.73
42.16	3.56	1¼	40S	3.44
42.16	4.85	1¼	80S	4.53
42.16	6.352)	1¼	160	5.69
48.26	2.77	1½	10S	3.16
48.26	3.68	1½	40S	4.11
48.26	5.08	1½	80S	5.49
60.33	2.77	2	10S	3.99
60.33	3.91	2	40S	5.52
60.33	5.54	2	80S	7.6
60.33	8.742)	2	160	11.29
73.03	3.05	2½	10S	5.35
73.03	5.16	2½	40S	8.77
73.03	7.01	2½	80S	11.59
88.9	3.05	3	10S	6.56
88.9	5.49	3	40S	11.47
88.9	7.62	3	80S	15.51
88.9	11.132)	3	160	21.67
101.6	3.05	3½	10S	7.53
101.6	5.74	3½	40S	13.78
101.6	8.08	3½	80S	18.92
114.3	3.05	4	10S	8.5
114.3	6.02	4	40S	16.32
114.3	8.56	4	80S	22.67
114.3	13.492)	4	160	34.05
141.3	6.55	5	40S	22.1
141.3	9.53	5	80S	31.44
141.3	15.882)	5	160	49.87
168.28	3.4	6	10S	14.04
168.28	7.11	6	40S	28.69
168.28	10.97	6	80S	43.21
168.28	14.27	6	120	54.75
168.28	18.262)	6	160	68.59
219.08	8.18	8	40S	43.2
219.08	12.7	8	80S	65.63
219.08	18.23	8	120	91.3
219.08	23.012)	8	160	112.97

p5 Alloy Steel Pipes Thickness Chart

NPS [DN] Designator	Tolerance, % from Specified
Over	Under
1/8 to 2 1/2 [6 to 65] incl., all t/D ratios	20.00%	12.50%
Above 2 1/2 [65], t/D < or = 5%	22.50%	12.50%
Above 2 1/2 [65], t/D > 5%	15.00%	12.50%
(t = Specified Wall Thickness; D = Specified Outside Diameter)

Composition Chart of ASTM A335 P5 Welded Pipe

Alloy Steel P5	C	Cr	S	Si	Mn	Mo	P
	0.05 – 0.15	1.00 – 1.50	0.025 max	0.50 – 1.00	0.30 – 0.60	0.44 – 0.65	0.025 max

Alloy Steel Grade P5 Pipe Mechanical Properties Chart

Tensile Strength, MPa	Yield Strength, MPa	Elongation
415 min	205 min	30 min

Alloy Steel Gr.P5 Pipes Equivalent Material Grade

ASTM	ASME	JIS G 3458	UNS	BS	DIN	ISO	ABS	NK	LRS
A335 P5	SA335 P5	STPA 25	K41545	3604 P1 625	2604 III TS37	ABS 14

P5 Alloy Steel Seamless Pipe Heat Treatment

	P5, P9, P11, and P22
Grade Chet	Heat Treatment Type	Normalize Temp Range F [C]	Annealing and Tempering Temp Range F [C]
P5 (b,c)	Isothermal or Full Anneal
	Temper and Normalize	*****	1250 [675]
	Subcritical Anneal (P5c only)	*****	1325 - 1375 [715 - 745]
P9	Isothermal or Full Anneal
	Temper and Normalize<	*****	1250 [675]
P11	Isothermal or Full Anneal
	Temper and Normalize	*****	1200 [650]
P22	Isothermal or Full Anneal
	Temper and Normalize	*****	1250 [675]
P91	Temper and Normalize	1900-1975 [1040 - 1080]	1350-1470 [730 - 800]
	Temper and Quench	1900-1975 [1040 - 1080]	1350-1470 [730 - 800]

Alloy Steel P5 Chrome Moly Pipe Tensile

Seamless Pipe
	P5	P9	P11	P22	P91
Tensile Strength, minimum., psi
ksi	60	60	60	60	85
MPa	415	415	415	415	585
Yield Strength, minimum., psi
ksi	30	30	30	30	60
MPa	205	205	205	205	415

WORKSHOP EQUIPMENT

PACKAGE DELIVERY 20ft GP:5898mm(Length)x2352mm(Width)x2393mm(High)   24-26CBM

40ft GP:12032mm(Length)x2352mm(Width)x2393mm(High)   54CBM

40ft HC:12032mm(Length)x2352mm(Width)x2698mm(High)    68CBM

In bundle,plastic bags,thin film,wooden pallet,standard seaworthy export packing or as customer demands