Stainless Steel 420 Flanges Summary
Mortec At A Glance
Established
Since 2012 • 15+ yrs experience
Manufacturing Units
2 in-house units • Taloja & Mazgaon
Stockyard Area
8,850+ sq.ft • Ready-stock inventory
Certifications
ISO 9001:2015, PED • GST, IEC & MSME
Clientele
100+ clients • India & export markets
Export Reach
15+ countries • GCC, Africa & APAC
Testing Offered
Tensile, hardness & PMI • MTC EN 10204 3.1
Shipment Documents
Invoice, Packing List • COO, COI, MTC, BL & Lab Report
Table of Content
High Hardness ASTM A182 F420 Slip On Flange Manufacturer in India with MTC
Stainless Steel 420 Flanges take a quench, unlike austenitic grades ever could. Carbon runs higher alongside roughly thirteen percent chromium in UNS S42000 chemistry. This body forges, hardens, and tempers back to your nominated hardness precisely. Hardened 420 resists wear that would gall standard 304 or 316 joints easily. Heat-numbered bar gets upset on our own Mumbai forging presses first. Annealing for machining happens before quenching and tempering on our furnace line. Rockwell readings get taken after tempering and printed directly on certificates.
This grade only develops corrosion resistance once properly hardened, tempered and finished. It is not suited to chloride or marine service environments at all. Abrasion, steam, fresh water and mild chemical duty are its proper territory. Machining follows ASME B16.5, B16.47 Series A and B, B16.36 and B16.48 standards. RF, FF or RTJ faces get turned to your specified gasket schedule.
Stainless Steel 420 Flange Specification
Ordered from the works with furnace charts, Rockwell readings and the original mill certificate behind it.
SS 420 Flanges Face & Thread Options
- RF, FF, RTJ facing
- NPT, BSPT, BSPP thread
Type 420 Flange Dimensional Standards
- ASME B16.5, B16.47 Series A & B
- ASME B16.36, B16.48, MSS SP-44
- EN 1092-1, JIS B2220
UNS S42000 Product Form Standards
- ASTM A473 stainless steel forgings
- ASTM A276 and A479 bar
- EN 10088-3 for the 1.4021 route
SS 420 Flange Quality Systems
- ISO 9001:2015 certified plant
- PED 2014/68/EU compliance on request
Corrosion Protection In Transit
- Passivation to ASTM A967 where asked
- Oil dip and VCI film against sea air
- Faces capped so machined surfaces stay bright
Stainless Steel 420 Flange Marking
- Heat number, grade, size, class stamped
- Marking practice to MSS SP-25
SS 420 Supporting Material & Packing
- Ring joints, stud bolts, spiral gaskets
- Fumigated wooden cases, ISPM 15 stamped
Stainless Steel 420 Flanges Raw Material Source
- Bar and billet from audited mills only
- Heat-to-flange traceability retained
Stainless Steel 420 Flanges Manufacturer In Mumbai – Own Hardening Line Since 2012
Name the hardness you want on the certificate and we will quote against it.
UNS S42000 Slip On Flange Dimension
Leading Stainless Steel 420 Flanges supplier in india offering immediate inventory or custom fabrication.
Available Sizes
Full Dimensional Charts
Outside diameter, bolt circle, hole count, hub run and body thickness for the class you nominate are issued as a PDF or Excel sheet against every enquiry, drawn from the ASME B16.5, B16.47 and EN 1092-1 tables. Non-catalogue drillings and oversize collars are quoted from your own print.
Request Dimension ChartSS 420 Blind Flanges Size Chart
Class 150 raised-face dimensions read straight off ASME B16.5 for the sizes we cut most weeks.
| NPS | DN | OD | Bolt Circle | Bolt Holes | Bolt Size | Thickness |
|---|---|---|---|---|---|---|
| ¾″ | DN20 | 98.6 | 69.9 | 4 | ½″ | 12.7 |
| 2½″ | DN65 | 177.8 | 139.7 | 4 | ⅝″ | 22.4 |
| 5″ | DN125 | 254.0 | 215.9 | 8 | ¾″ | 23.9 |
| 14″ | DN350 | 533.4 | 476.3 | 12 | 1″ | 35.1 |
| 20″ | DN500 | 698.5 | 635.0 | 20 | 1⅛″ | 42.9 |
Stainless Steel F420 Raised Face Flange Finishes
Top Stainless Steel 420 Flanges manufacturer in india ensures smooth surfaces for rust resistance.
ASTM A182 Grade F420 Socket Weld Flange Pressure Class Range
Bodies are machined right across the ASME ladder, open a class to see where it tends to be used.
150#Class 150
Water service, wash-down lines and light machinery connections where wear beats pressure.
300#Class 300
The class most SS 420 enquiries settle on, covering pump bodies and valve connections.
600#Class 600
Chosen for steam headers and slurry duty where the face has to survive scouring.
900#Class 900
Thicker sections for wellhead accessories and hardened trim assemblies.
1500#Class 1500
Specified on hydraulic test blocks and heavy mineral processing equipment.
2500#Class 2500
The heaviest body we turn in this grade, built for rig and laboratory pressure work.
Stainless Steel 420 Flange Types
ASTM A182 F420 Slip On Flange
ASME B16.5 • Class 150–600- Slides over the pipe before welding
- Easiest body to align on machinery skids
SS 420 Blind Flanges
ASME B16.5 • All Classes- Solid disc, nothing to bore or line up
- Seals off nozzles and test connections
AISI SS 420 Weld Neck Flange
ASME B16.5 • ½″–24″- Tapered hub carries the load off the weld
- Preferred where the line sees vibration
ASTM A182 Grade F420 Socket Weld Flange
ASME B16.5 • ≤4″ NB- Recess seats the pipe end squarely
- Used on small-bore hydraulic runs
SS 420 Pipe Flange
Threaded • ≤4″ NB- NPT or BSPT cut, no welding on site
- Handy on packaged plant and test rigs
Type 420 Lap Joint Flange
ASME B16.5 • With Stub End- Backing ring turns freely for bolt-up
- Good where joints are opened for cleaning
Supplier of Smooth Machined Finish WNR 1.4021 Blind and Weld Neck Flange in Custom Sizes Built for Demanding Industrial Applications
UNS S42000 Flange Chemical Composition
Carbon carries a minimum rather than a maximum here, and that single line is what makes the grade hardenable.
AISI SS 420 Weld Neck Flange Mechanical Properties
A Stainless Steel 420 Flanges supplier in mumbai offering standard baselines and custom tempering.
WNR 1.4021 Blind Flange Material Equivalent
One martensitic chemistry, many national names - order against whichever your specification prints.
ASTM / AISI (USA)
- UNS S42000
- AISI / SAE Type 420
- ASTM A473 (Stainless Forgings)
- ASTM A276 & A479 (Bar)
EN / W.Nr (Europe)
- Werkstoff 1.4021
- X20Cr13
- EN 10088-3
JIS (Japan)
- SUS 420J1
- JIS G4303 (Bar)
- JIS B2220 (Flange Dimensions)
BS & AFNOR
- BS 420S29
- AFNOR Z20C13
Flange Dimensional Codes
- ASME B16.5 / B16.47 A & B
- ASME B16.36 / B16.48
- EN 1092-1 (PN 6–PN 100)
- MSS SP-44
Delivery & Test References
- EN 10204 3.1 / 3.2 certification
- ASTM E18 (Rockwell Hardness)
- ASTM E8/E8M (Tensile)
- ASTM A967 (Passivation)
SS 420 Pipe Flange HSN Code & Export Documents
SS 420 Blind Flanges Exporter In India To Istanbul & Mersin
Oil-dipped and capped so the faces reach your Turkish store still bright.
ASTM A182 F420 Flanges Hardening, Tempering & Delivered Hardness
Nothing about this grade is fixed until the tempering call is made, so make it on the order rather than afterwards.
Annealed For Machining
- Soft condition, roughly 241 HBW ceiling
- How we hold rack stock so bores stay easy to cut
- Corrosion resistance is at its weakest here
Hardening Cycle
- Austenitised near 980 to 1035 °C
- Oil or still-air quench depending on section
- Tempered straight away, never left as-quenched
Choosing The Tempering Band
- Low temper near 150 to 370 °C keeps hardness high
- That band also gives the best corrosion behaviour
- Higher tempering trades hardness away for toughness
The Band To Avoid
- Tempering around 425 to 600 °C is not recommended
- Toughness and corrosion resistance both suffer there
- We flag it if your PO wording lands in that range
420 SS Spectacle Flange Versus Grade 410 And Grade 430
Three 400-series grades sit close together on price and a long way apart in behaviour.
Type 420 (UNS S42000)
- Structure: Martensitic, hardenable by quenching
- Carbon: Carries a minimum, which is the whole point
- Strong Point: Highest hardness of the three
- Pick It For: Wear, galling and abrasive contact faces
Type 410 (UNS S41000)
- Structure: Martensitic, also hardenable
- Carbon: Capped at 0.15, so a lower hardness ceiling
- Strong Point: Tougher and far easier to weld
- Pick It For: Fabricated assemblies needing moderate strength
Stainless Steel 420 Ring Joint Type Flanges Hardness Testing & Inspection
On a hardenable grade the hardness column is the one your inspector will read first.
SS 420 Forged Flat Face Flange Country Compliance Documents
Every market asks for a slightly different file, and ours is closed out before the container doors shut.
South Africa
- Durban and Richards Bay routings offered
- Hardness and chemistry tied to your SANS clause
- Importer VAT and tariff heading shown on the invoice
United Arab Emirates
- Jebel Ali, Khalifa and Hamriyah discharge
- Vendor approval files prepared for EPC desks
- Heat number legible on each machined body
Kenya
- KEBS PVoC inspection arranged before loading
- Certificate of Conformity issued ahead of sailing
- Mombasa entry against your IDF reference
Canada
- CRN registration paperwork under CSA B51
- Submissions formatted for ABSA and TSSA desks
- Delivered into Montreal, Toronto and Vancouver
Martensitic Stainless 420 Flange Applications & Industries
Top Stainless Steel 420 Flanges exporter providing components for systems where hardness matters most.
Stainless Steel 420 Flanges Stocked & Dispatched Worldwide
Annealed rack stock and heat-treated production leaving Mumbai for buyers in these markets.
UAE
TurkeyCanadaUK
Saudi Arabia
SingaporeUSA
Mexico
Thailand
Italy
NetherlandsGermany
Philippines
Malaysia
Uganda
IndonesiaSouth Africa
Vietnam
Venezuela
MumbaiAhmedabadBengaluruChennaiPuneGhaziabadGujaratDelhiRajkotKolkataASTM A473 UNS S42000 Flange Supplier In Bengaluru – Hardness Traceable To Every Heat Lot
Rockwell readings, furnace charts and stamped heat numbers all reconcile on one sheet.
ASTM A182 F420 Flanges Delivery Estimate
Realistic windows that start counting once size, class, facing and the tempering call are settled.
Ex-Stock Dispatch
- Annealed rack sizes clear the yard in 3 to 5 working days
Sea Freight
- Reckon on 18 to 38 days at sea, port depending, ex Nhava Sheva
Air Freight
- 3 to 7 days for a breakdown that has already stopped production
Country-Specific ETA
- Your own port timetable rides along with the proforma invoice
Stainless Steel 420 Flanges FAQs
What buyers put to our desk before an SS 420 order is signed off.
Is SS 420 pipe flange good for wear duty?
Yes. It hardens by heat treatment and outlasts austenitic grades against abrasion.
What hardness does ASTM A182 F420 reach in HRC?
Around 50 HRC hardened and tempered, near 22 HRC in annealed condition.
What grade is UNS S42000 made from?
Martensitic stainless near 13 percent chromium, with carbon raised so it hardens.
Is WNR 1.4021 flange material magnetic?
Yes. The martensitic structure stays ferromagnetic annealed, hardened or tempered.
Do you export AISI SS 420 flanges to Saudi Arabia?
Yes. SANS-referenced files, SASO conformity paperwork and Durban or Dammam routings handled.
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