Alloy S31254 fasteners bolt screw nut washer

Description

GB 015Cr20Ni18Mo6CuN
ISC S31252
JIS SUS 312L
KS  
ASTM S31254
UNS S31254
ISO X1CrNiMoN 20-18-7
EN X1CrNiMoCuN 20-18-7
W-Nr. 1.4547

High molybdenum content and high chromium and nitrogen content make UNSS31254 have excellent spot and crevice corrosion resistance.The addition of copper improves corrosion resistance in some acids.In addition, due to its high nickel content and high chromium and molybdenum content, UNSS31254 has a good performance of stress corrosion cracking.

UNSS31254 alloy is a versatile material with many industrial applications:

  1. Petroleum and petrochemical equipment, such as bellows in petrochemical equipment.
  2. Pulp and paper bleaching equipment, such as pulp digester, bleaching equipment, filter scrubber barrel and press roller, etc.
  3. Power plant flue gas desulfurization device, mainly used parts: absorber tower body, flue, baffle plate, inner parts, spray system, etc.
  4. Offshore systems or seawater treatment, such as thin-walled condensation pipes cooled by seawater in power plants, desalination equipment, even in equipment where seawater may not flow.
  5. Desalination industry, such as salt production or desalting equipment.
  6. Heat exchangers, especially in the environment with chloride ions.

Chemical element content(%)

S31254 Min% Max%
C 0.02
Si 0.8
Mn 1
P 0.03
S 0.01
Cr 19.5 20.5
Ni 17.5 18.5
Cu 0.5 1
Mo 6 6.5
N 0.18 0.22

Fastener type

BOLT Hex bolt DIN931(ISO 4014)

DIN933(ISO 4017)

DIN961(ISO 8676)

ANSI B18.2.1

JIS B1180

Hex flange bolt DIN6921

ANSI B18.2.1

Carriage bolt DIN603(ISO 8677)

ANSI B18.5

Eye bolt DIN580

DIN444

Square head bolt ASME B18.2.1

JIS B1182

T bolt DIN186

JIS B1166

U bolt DIN3570

IFI136

ASME B18.31.5

Anchor bolt ASME B18.31.5

JB/ZQ 4363

JB/ZQ4364

SCREW Hex socket screw DIN912(ISO 4762)

DIN7984

DIN7991(ISO 10642)

ISO 7380

ASME B18.3

Machine screw DIN963(ISO 2009)

DIN964(ISO 2010)

DIN965(ISO7046)

DIN966(ISO7047)

ANSI B18.6.3P

ANSI B18.6.3F

DIN84(ISO 1207)

DIN85(ISO 1580)

Set screw DIN913(ISO 4026)

DIN914(ISO 4027)

DIN915(ISO 4028)

DIN916(ISO 4029 )

ANSI B18.3

Tapping screw ISO7049

ISO 7050

JIS B1122T

DIN7982

DIN968

Wooden screw DIN571

ANSI B18.2.1

NUT Hex nut DIN 934(ISO 4032)

ANSI B18.2.2

ANSI B18.2.4

DIN 936(ISO 4035)

DIN 439(ISO 4036)

ISO 8674(UNI 5587)

Hex flange nut DIN6923(ISO 4161

ANSI B18.2.4.4M)

IFI 145

Lock nut DIN985

DIN982

DIN980

DIN6926

ANSI B18.16.6

Cover nut DIN1587

DIN917

Square nut DIN557

DIN562

ANSI N18.2.2

STUD Stud DIN975

DIN976

IFI136

WASHER Flat washer DIN125(ISO 7089/ISO 7090)

DIN126(ISO 7091)

DIN9021(ISO 7093)

ANSI B18.22.1

Spring washer DIN127

DIN7980

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