Haynes 188 Round Bar | AMS 5772 | UNS R30188 | DIN 2.4683

ASTM B572 Haynes 188 Round Bar Distributor, AMS 5608 Haynes 188 Round Bar Exporter, EN CoNiCrW Round Bar Stockist, UNS R30188 Round Bar Supplier, 2.4683 Round Bar Manufacturer.

PM Industries manufactures, supplies, and stocks Haynes 188 Round Bar. It's a cobalt-nickel-chromium-tungsten alloy developed specifically for continuous service in high-temperature and oxidizing environments. A small lanthanum addition in the composition helps form a stable, adherent oxide layer on the surface, which improves resistance to oxidation, spalling, and hot corrosion over long service intervals.

EN CoNiCrW Round Bar, UNS R30188 Round Bar, 2.4683 Round Bar, ASTM B572 Haynes 188 Round Bar.

Haynes 188 is not a general-purpose alloy. It's specified when service temperatures approach the limits of standard nickel alloys and stainless steels, and when long-term dimensional stability under heat is a hard requirement.

Oxidation resistance is where Haynes 188 consistently outperforms standard nickel alloys and stainless grades. The lanthanum-assisted oxide scale holds up well under thermal cycling, which matters in applications where components heat and cool repeatedly rather than running at constant temperature.

Microstructural stability after long-term heat exposure is another reason this alloy gets specified for precision hardware. Components that must hold dimensions and mechanical properties over thousands of service hours need an alloy that doesn't degrade gradually under thermal load. Haynes 188 does that reliably.

Fabricability is better than many cobalt superalloys. It machines, forms, and welds with less difficulty, which makes it practical for complex component geometries and fabricated assemblies without requiring specialized processing beyond what a well-equipped shop can handle.

Bar is available in a range of diameters and surface finishes with full material certification to applicable specifications. Contact PM Industries for stock availability, dimensions, and pricing.

Specification Haynes 188 Round bar

Specification	ASTM, EN, DIN, JIS, BS, ASME, AISI
Condition	Hardened & tempered, annealed
Length	1 to 6 Meters, Custom Cut Lengths
Round Bars	Outside Diameter in the range of 4mm to 500mm above as per the customer requirement.
Bright Bars	Outside Diameter in the range of 4mm to 500mm above as per the customer requirement.
Hex Bars	18mm – 57mm (11/16″ to 2-3/4″) above as per the requirement.
Square Bars	18mm – 47mm (11/16″ to 1-3/4″) above as per the requirement.
Flat Bars	1/2” to 10” in thickness range of 2mm to 150mm
Finish	Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Technique	Hot Rolled, Cold Rolled, Cold Drawn, Forged Round Bar, Rod
Tolerance	H8, H9, H10, H11, H12, H13, K9, K10, K11, K12 or as per clients’ requirements
Test Certificates	EN 10204/3.1B, NACE MR0103, NACE MR0175
Raw Materials Certificate	100% Radiography Test Report
Inspection	Third Party Inspection Report, etc

Available Types

Haynes 188 Bars Chemical Composition

Grade	C	Mn	P	S	Si	Ni	Cr	Fe	W	B	La
Haynes 188	.05 – .15	1.25 max	.020 max	.015 max	.20 – .50	20.0 – 24.0	21.0 -23.0	3.0 max	13.0 -15.0	.015 max	.03 – .15

Mechanical Properties of Haynes 188 Bars

Yield Strength	Tensile Strength	Elongation
Ksi 65	Ksi 140	%
Mpa 446	Mpa 963	55

Haynes 188 Bars Equivalent Grades

STANDARD	WERKSTOFF NR.	UNS
Haynes 188	–	R30188

Size

US Bar		Metric		Japanese		Canadian/ASTM
Diameter (Inch)	Size of Bar	Diameter (milimeter)	size of Bar	Diameter (milimeter)	size of Bar	Diameter (milimeter2)	size of Bar
0.375	#3	5.5	5.5	10	10	200	15M
0.25	#2	5	5	6	6	100	10M
0.625	#5	7	7	16	16	500	25M
0.5	#4	6	6	13	13	300	20M
0.875	#7	9	9	22	22	1000	35M
0.75	#6	8	8	19	19	700	30M
1.125	#9	11	11	29	29	2500	55M
1	#8	10	10	25	25	1500	45M
1.375	#11	14	14	35	35
1.25	#10	12	12	32	32
1.625	#13	18	18	41	41
1.5	#12	16	16	38	38
1.875	#15	22	22	48	48
1.75	#14	20	20	44	44
2.25	#18	28	28	57	57
2	#16	25	25	51	51
		36	36
		32	32
		44	44
		40	40
		50	50

Condition

ANN	Annealed
H&T	Hardened and tempered.
PH	Precipitation hardened.

Finish

Bright drawn	BD	Slit rolled edge	SRE
Cold drawn	CD	Polished	P
Peeled and turned	P&T	Rough turned/peeled	RT
Cold finished	CF	Hot rolled pickled and annealed	HRAP
Centreless ground	CG	Hot finished	HF
Smooth turned	ST	reeled and Peeled	PR

Available Stock

UNS R30188 Annealed Round Bar	ISO CoNiCrW Shafting Round Bar
2.4683 Normalized Round Bar	AMS 5608 Haynes 188 Automotive Round Bar
EN CoNiCrW Quenched & Tempered Round Bar	ASTM B572 Haynes 188 Aerospace Round Bar
ISO CoNiCrW Solution Annealed Round Bar	UNS R30188 Oil & Gas Round Bar
AMS 5608 Haynes 188 Hardened Round Bar	2.4683 Marine Round Bar
ASTM B572 Haynes 188 Bright Round Bar	EN CoNiCrW Medical Grade Round Bar
UNS R30188 Polished Round Bar	ISO CoNiCrW Hot Rolled Round Bar
2.4683 Mirror Finish Round Bar	AMS 5608 Haynes 188 Cold Drawn Round Bar
EN CoNiCrW Pickled & Passivated Round Bar	ASTM B572 Haynes 188 Cold Rolled Round Bar
ISO CoNiCrW Coated / Plated Round Bar	UNS R30188 Forged Round Bar
AMS 5608 Haynes 188 Commercial Round Bar	2.4683 Peeled Round Bar
ASTM B572 Haynes 188 Precision Round Bar	EN CoNiCrW Turned Round Bar
UNS R30188 Straight Length Round Bar	ISO CoNiCrW Ground Round Bar
2.4683 Cut-to-Length Round Bar	AMS 5608 Haynes 188 Centreless Ground Round Bar
EN CoNiCrW Structural Round Bar	ASTM B572 Haynes 188 Precision Ground Round Bar