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Special Stainless & Iron-Base AlloysUNS N08904View material details

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Compare Materials: 904L
Material904LN08904

Summary

Material familySpecial Stainless & Iron-Base Alloys
Grade / UNSN08904
SummaryA high-alloy austenitic stainless steel with molybdenum and copper for chemical-processing equipment.

Performance overview

Material focusHigh-alloy austenitic stainless
Physical referenceNot documented in this reference
Chemical composition
Chemical composition

Composition limits · wt.%

Cr
19–23
Ni
23–28
Mo
4–5
Cu
1–2
N
≤0.10
C
≤0.02
Mn
≤2.0
P
≤0.045
S
≤0.035
Si
≤1.0
Supplied technical reference · Scanned PDF page 2 · printed page 14

Mechanical properties

Reference conditions vary or are incomplete. Read the basis, condition and source for each column; these values do not establish a performance ranking or finished-fastener acceptance values.

Tensile strength≥490 MPa
Catalogue reference minimums
Not documented in this reference
Not documented in this reference
Supplied technical reference · Scanned PDF page 2 · printed page 14
0.2% yield strength≥220 MPa
Catalogue reference minimums
Not documented in this reference
Not documented in this reference
Supplied technical reference · Scanned PDF page 2 · printed page 14
Elongation≥35 %
Catalogue reference minimums
Not documented in this reference
Not documented in this reference
Supplied technical reference · Scanned PDF page 2 · printed page 14
Reference conditions
Data basis
Catalogue reference minimums
Condition
Not documented in this reference
Sample form
Not documented in this reference
Sample size
Not documented in this reference
Test temperature
Not documented in this reference
Test method
Not documented in this reference
Test direction
Not documented in this reference
Elongation gauge length
A5, as labelled in supplied table

Temperature & corrosion

Evaluate the medium, concentration, impurities, temperature and loading together. A melting point or oxidation reference is not a safe working-temperature limit.

Service conditions to reviewEvaluate the specific acid and temperature; resistance is environment-dependent.
Temperature-dependent dataNot documented in this reference

Heat treatment

Delivery condition and heat-treatment requirements are agreed for the requested product form and order.

ConditionNot documented in this reference
Reference treatmentNot documented in this reference

Reference applications

Application examples provide context for review; suitability depends on the actual service conditions.

Reference applicationsAcid-handling equipment · process systems

Standards & documentation

Confirm the edition, product form and condition. Material specifications do not establish finished-fastener compliance.

Material specifications by form
Sources
Sources

Documents for your enquiry

Every BYBOLT delivery includes an MTC / EN 10204 3.1 certificate, heat-number traceability and mechanical testing. Threaded products include sampled GO / NO-GO gauging. Test methods and acceptance criteria follow the agreed specification; PMI, third-party inspection and additional records are agreed separately at quotation.

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