EN 10269 Grade 30CrNiMo8 (1.6580) Bolts, Studs, Nuts Manufacturer

EN 10269 Grade 30CrNiMo8 (1.6580) Fasteners

High-Alloy Chromium-Nickel-Molybdenum Steel Bolts, Stud Bolts, Screws, Nuts & Washers in EN 10269 Grade 30CrNiMo8 (1.6580)

EN 10269 Grade 30CrNiMo8 (1.6580) Fasteners are high-alloy chromium-nickel-molybdenum steel fasteners offering exceptional tensile strength, toughness, and hardenability, specified for the most demanding bolting applications in heavy-duty pressure equipment, offshore platforms, and large industrial machinery.

EN 10269 30CrNiMo8 Chemical composition

Material designation	Chemical composition, % by mass
30CrNiMo8	1.6580	0,26 to 0,34	≤ 0,40	0,50 to 0,80	0.025	0.035	-	-	1,80 to 2,20	0,30 to 0,50	1,80 to 2,20	-	-
a Elements not listed in this table may not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All appropriate precautions are to be taken to avoid the addition of such elements from scrap and other materials used in production which would impair mechanical properties and the usefulness of the steel. b A controlled sulphur content of 0,015 % to 0,030 % improves the machinability and is therefore recommended and may be agreed at time of enquiry and order. For weldability, a controlled sulphur content of 0,008 % to 0,030 % is recommended and may be agreed at time of enquiry and order. c For requirements regarding magnetic properties up to a maximum of 0,28 % C.

Material designation

Chemical composition, % by mass

Name

Number

P max.

S max.

Al tot

Others

Steels for quenching and tempering

30CrNiMo8

1.6580

0,26 to 0,34

≤ 0,40

0,50 to 0,80

0.025

0.035

1,80 to 2,20

0,30 to 0,50

1,80 to 2,20

a Elements not listed in this table may not be intentionally added to the steel without the agreement of the purchaser except for finishing the cast. All appropriate precautions are to be taken to avoid the addition of such elements from scrap and other materials used in production which would impair mechanical properties and the usefulness of the steel.
b A controlled sulphur content of 0,015 % to 0,030 % improves the machinability and is therefore recommended and may be agreed at time of enquiry and order. For weldability, a controlled sulphur content of 0,008 % to 0,030 % is recommended and may be agreed at time of enquiry and order.
c For requirements regarding magnetic properties up to a maximum of 0,28 % C.

EN 10269 30CrNiMo8 Mechanical properties

Mechanical properties at Room Temperature

Mechanical properties at room temperature for delivery conditions normally applied for further processing

Material designation	Heat treatment condition a,b	Hardness HBW max.	Tensile strength Rm MPa max.	Reduction in area Z % min.
30CrNiMo8	1.6580	+A	255	-	-
a + AC = annealed to achieve spheroidized carbides; + S = treated for cold shearing; + A = soft annealed. b Products made to these heat treatment conditions do not support the Essential Safety Requirements of Directive 97/23/EC, unless other criteria are taken into account, see Annex 1, 7.5 of this directive.

Material designation

Heat treatment condition a,b

Hardness HBW max.

Tensile strength Rm MPa max.

Reduction in area Z % min.

Name

Number

30CrNiMo8

1.6580

255

a + AC = annealed to achieve spheroidized carbides; + S = treated for cold shearing; + A = soft annealed.
b Products made to these heat treatment conditions do not support the Essential Safety Requirements of Directive 97/23/EC, unless other criteria are taken into account, see Annex 1, 7.5 of this directive.

EN 10269 30CrNiMo8 Impact Energy

Minimum impact energy (longitudinal direction) at low temperature of steels in delivery conditions which support the Essential Safety Requirements of Directive 97/23/EC b

Material designation	Heat treatment condition^a	Diameter e d mm	Minimum impact energy KV2 in J c (ISO-V test piece) at a test temperature in °C of:
30CrNiMo8	1.6580	+QT	d ≤ 100	-	-	-	-	-	-	-	-	-	-	-	-	40	-	-	45
a +AT = solution annealed; +C = cold work hardened; +N = normalized; +NT = normalized and tempered; +P = precipitation hardened; +QT = quenched and tempered; +WW = warm worked (see Annex B). b Products made to these steel grades and these final heat treatment conditions support the Essential Safety Requirements of Directive 97/23/EC; see Annex 1, 7.5 of this directive. c Average of 3 test results. d Steel grade 1.4980 may be ordered for cryogenic purposes with impact values of 50 J at -270 °C, 60 J at -196 °C and 70 J at 20 °C. e For rectangular cross sections "d" will be replaced by "b"

Material designation

Heat treatment condition^a

Diameter e d mm

Minimum impact energy KV2 in J c
(ISO-V test piece) at a test temperature in °C of:

Name

Number

-270

-196

-160

-140

-120

-110

-100

-90

-80

-70

-60

-50

-40

-20

+20

30CrNiMo8

1.6580

+QT

d ≤ 100

a +AT = solution annealed; +C = cold work hardened; +N = normalized; +NT = normalized and tempered; +P = precipitation hardened; +QT = quenched and tempered; +WW = warm worked (see Annex B).
b Products made to these steel grades and these final heat treatment conditions support the Essential Safety Requirements of Directive 97/23/EC; see Annex 1, 7.5 of this directive.
c Average of 3 test results.
d Steel grade 1.4980 may be ordered for cryogenic purposes with impact values of 50 J at -270 °C, 60 J at -196 °C and 70 J at 20 °C.
e For rectangular cross sections "d" will be replaced by "b"

Specifications

Surface Treatments

Xylan 1070 / 1014 / 1400 / 1424

Xylar 2 / 101

Geomet 321 / 500 / 720

SermaGard 1105 / 1280

Dacromet 320 / 500

TakeCoat 1000 Ceramic

Delta Tone/Seal

Magnigard

MolyKote

Sherardized

Zinc-Cobalt (ASTM B840)

Zinc-Nickel (ASTM B841)

Certifications

ISO 9001 - 2015 Certified
PED 2014/68/EC
NACE MR0175/ISO 15156-2
NORSOK M-650
DFAR
MERKBLATT AD 2000 W2/W7/W10

EN 10269 Grade 30CrNiMo8 (1.6580) Fasteners

EN 10269 30CrNiMo8 Chemical composition

EN 10269 30CrNiMo8 Mechanical properties

Mechanical properties at Room Temperature

Mechanical properties at room temperature for delivery conditions normally applied for further processing

EN 10269 30CrNiMo8 Impact Energy

Minimum impact energy (longitudinal direction) at low temperature of steels in delivery conditions which support the Essential Safety Requirements of Directive 97/23/EC b

Specifications

Surface Treatments

Certifications

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