Duplex Bolts

Duplex Bolts

Duplex Bolts 2205, UNS S32205, is a treated steel material, whose "Duplex Bolts" name is gotten from the blended microstructure which contains generally square with bits of ferrite and austenite. This review is the most prevalent assortment and this two-stage material is a critical redesign from 316 tempered steel as far as both yield quality and erosion opposition.

Use of both Duplex Bolts and Super Duplex Bolts treated steel ought to be restricted to temperatures underneath 570° F as broadened raised temperature presentation can embrittle this material.The most common grades of Duplex Bolts bolts are Duplex Bolts 2205 and Super Duplex Bolts 2507. Gain more insight on these two grades by accessing our Duplex Bolts 2205 and Super Duplex Bolts 2507 overviews or by contacting our engineering experts.

Duplex Bolts-manufacturer-supplier-importer-exporter-stockholder

Rimco Overseas is one of the outstanding assembling unit and provider of Duplex Bolts Steel (Bolts), which dependably respond all the more delicately towards precipitation. Duplex Bolts Hex Head Bolts ought to be guaranteed that the temperature extend between 950 Degree C and 700 Degree C is navigated in close to two minutes. Because of the likelihood that other undesired metallic stages could emerge, these Duplex Bolts Hex Head Nuts is further chilling off to 300 Degree C and ought to be embraced as fast as would be prudent.

Duplex Bolts Square Bolts are likewise simple to weld as indicated by the typical standards for welding tempered steels. Very low and incredibly high warmth information ought to be dodged in these Duplex Bolts Square bolts, contingent upon the crease geometry, the thickness of the steel and the welding procedure. Hence Duplex Bolts Eye Bolts is important to screen bury – pass temperature and the warmth contribution amid the welding procedure. The most secure path to a decent ferrite/austenite proportion in the weld crease of these Duplex Bolts Eye bolts is consequent warmth treatment, supposed arrangement tempering. For Duplex Bolts T-Bolts, holding times of 2 minutes to 3 minutes for every mm of divider thickness at temperatures around 1080 Degree C are adequate to accomplish a decent austenite/ferrite proportion. In the wake of strengthening, cooling of these Duplex Bolts T-Nuts as quickly as conceivable is fitting.

Duplex Bolts Specifications

Specifications ASTM A 479 ASME SA 479
Standard DIN, ASTM, BS and all International Standards
Length 3 mm to 200 mm
Size M3 – M56 | 3/6″ to 2″ | Custom Sizes
Type Hex Head Bolts, Square Bolts, U bolts, Eye bolts, T bolt, Hex Bolt, Lag Bolts, Counter sunk Bolts, Hex Head nuts, Square nuts, Lock nuts, Eye nuts, wing nuts, T nuts, Panel Nuts, Coupling Nuts, Dome nuts, Acorn Nuts.

 

Types of Duplex Bolts

Duplex & Super Duplex Hex Head Bolt Duplex Hex Head Bolts
Super Duplex Hex Head Bolt
ASTM A479 Duplex Hex Head Bolt
Duplex & Super Duplex Square Bolt Duplex Square Bolts
Super Duplex Square Bolt
ASTM A479 Duplex Square Bolt
Duplex & Super Duplex Bolt Duplex U Bolt
Super Duplex U Bolts
ASTM A479 Duplex U Bolt
Duplex & Super Duplex Eye Bolt Duplex Eye Bolts
Super Duplex Eye Bolt
ASTM A479 Duplex Eye Bolt
Duplex & Super Duplex T Bolt Duplex T Bolts
Super Duplex T Bolt
ASTM A479 Duplex T Bolt
Duplex & Super Duplex Hex Bolt Super Duplex Hex Bolt
Duplex Hex Bolts
ASTM A479 Duplex Hex Bolt
Duplex & Super Duplex Lag Bolt Super Duplex Steel Lag Bolt
Duplex Lag Bolts
ASTM A479 Duplex Lag Bolt
Duplex & Super Duplex Counter sunk Bolt Duplex Counter sunk Bolts
Super Duplex Counter sunk Bolt
ASTM A479 Counter sunk Bolt

 

Chemical composition of Duplex Bolts

Steel

Designation

Number C

Max

Si Mn P

Max

S

Max

N Cr Cu Mo Ni Other
X2CrNiN22-2 1.4062 0.03 ≤1.00 ≤2.00 0.04 0.010 0.16 to 0.28 21.5 to 24.0 - ≤0.45 1.00 to 2.90 -
X2CrCuNiN23-2-2 1.4669 0.045 ≤1.00 1.00 to 3.00 0.04 0.030 0.12 to 0.20 21.5 to 24.0 1.60 to 3.00 ≤0.50 1.00 to 3.00 -
X2CrNiMoSi18-5-3 1.4424 0.03 1.40 to 2.00 1.20 to 2.00 0.035 0.015 0.05 to 0.10 18.0 to 19.0 - 2.5 to 3.0 4.5 to 5.2 -
X2CrNiN23-4 1.4362 0.03 ≤1.00 ≤2.00 0.035 0.015 0.05 to 0.20 22.0 to 24.5 0.10 to 0.60 0.10 to 0.60 3.5 to 5.5 -
X2CrMnNiN21-5-1 1.4162 0.04 ≤1.00 4.0 to 6.0 0.040 0.015 0.20 to 0.25 21.0 to 22.0 0.10 to 0.80 0.10 to 0.80 1.35 to 1.90 -
X2CrMnNiMoN21-5-3 1.4482 0.03 ≤1.00 4.0 to 6.0 0.035 0.030 0.05 to 0.20 19.5 to 21.5 ≤1.00 0.10 to 0.60 1.50 to 3.50 -
X2CrNiMoN22-5-3 1.4462 0.03 ≤1.00 ≤2.00 0.035 0.015 0.10 to 0.22 21.0 to 23.0 - 2.50 to 3.50 4.5 to 6.5 -
X2CrNiMnMoCuN24-4-3-2 1.4662 0.03 ≤0.70 2.5 to 4.0 0.035 0.005 0.20 to 0.30 23.0 to 25.0 0.10 to 0.80 1.00 to 2.00 3.0 to 4.5
X2CrNiMoCuN25-6-3 1.4507 0.03 ≤0.70 ≤2.00 0.035 0.015 0.20 to 0.30 24.0 to 26.0 1.00 to 2.50 3.0 to 4.0 6.0 to 8.0 -
X3CrNiMoN27-5-2 1.4460 0.05 ≤1.00 ≤2.00 0.035 0.015 0.05 to 0.20 25.0 to 28.0 - 1.30 to 2.00 4.5 to 6.5 -
X2CrNiMoN25-7-4 1.4410 0.03 ≤1.00 ≤2.00 0.035 0.015 0.24 to 0.35 24.0 to 26.0 - 3.0 to 4.5 6.0 to 8.0 -
X2CrNiMoCuWN25-7-4 1.4501 0.03 ≤1.00 ≤1.00 0.035 0.015 0.20 to 0.30 24.0 to 26.0 0.50 to 1.00 3.0 to 4.0 6.0 to 8.0 W 0.50 to 1.00
X2CrNiMoN29-7-2 1.4477 0.03 ≤0.50 0.80 to 1.50 0.030 0.015 0.30 to 0.40 28.0 to 30.0 ≤0.80 1.50 to 2.60 5.8 to 7.5 -
X2CrNiMoCoN28-8-5-1 1.4658 0.03 ≤0.50 ≤1.50 0.035 0.010 0.30 to 0.50 26.0 to 29.0 ≤1.00 4.0 to 5.0 5.5 to 9.5 Co 0.50 to 2.00
X2CrNiCuN23-4 1.4655 0.03 ≤1.00 ≤2.00 0.035 0.015 0.05 to 0.20 22.0 to 24.0 1.00 to 3.00 0.10 to 0.60 3.5 to 5.5 -

 

MECHANICAL PROPERTIES of Duplex Bolts

0.2% proof Stress (MPa)

Min.

Ultimate Tensile strength (MPa) Elongation (%)

Min.

X2CrNiN23-4 1.4362 400 600 to 830 25
X2CrNiMoN22-5-3 1.4462 450 650 to 880 25
X3CrNiMoN27-5-2 1.4460 450 620 to 680 20
X2CrNiN22-2 1.4062 380 650 to 900 30
X2CrCuNiN23-2-2 1.4669 400 650 to 900 25
X2CrNiMoSi18-5-3 1.4424 400 680 to 900 25
X2CrMnNiN21-5-1 1.4162 400 650 to 900 25
X2CrMnNiMoN21-5-3 1.4482 400 650 to 900 25
X2CrNiMnMoCuN24-4-3-2 1.4662 450 650 to 900 25
X2CrNiMoCuN25-6-3 1.4507 500 700 to 900 25
X2CrNiMoN25-7-4 1.4410 530 730 to 930 25
X2CrNiMoCuWN25-7-4 1.4501 530 730 to 930 25
X2CrNiMoN29-7-2 1.4477 550 750 to 1000 25
X2CrNiMoCoN28-8-5-1* 1.4658 650 800 to 1000 25

 

Other Grades of Duplex Bolts

  • Duplex S31803 / S32205 Bolts
  • Super Duplex S32750/ S32760 Bolts

 

Characteristics of Duplex Bolts

»  Twice design strength of austenitic and ferritic stainless steels
»   Wide range of corrosion resistance to match application
»   Good toughness down to minus 80 deg C but not genuine cryogenic applications
»   Particular resistance to stress corrosion cracking
»   Weldable with care in thick sections
»   More difficult to form and machine than austenitics
»   Restricted to 300 deg C maximum

 

Applications of Duplex Bolts

»   Chemical tankers processing
»   Innovative bridge
»   Lighter and safer offshore platforms
»   Strong sustainable storage tanks
»   Propelling the boating world
»   Low sulfur on the high seas

 

COATINGS

 

OUR SUMMARY :
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