Stainless Steel · Ferrous

Stainless Steel Flats

Name: Stainless Steel Stainless Steel Flats
Brand: Ritvik Metal Impex
SKU: RMI-021

Stainless Steel flat bars in SS 304/304L, 316/316L, 321, 410, 430 and Duplex grades. Width 10mm to 200mm, thickness 3mm to 50mm, in hot rolled, cold drawn and polished conditions per ASTM A276/A479 and EN 10058 standards.

Material

Stainless Steel

Form

Bars

Stainless Steel Flats Specifications

Chemical Composition for Stainless Steel Flats supplied by Ritvik Metal Impex
Grade	C	Mn	P	S	Si	Cr	Ni	Mo	Other
TP 304	0.08	2.00	0.045	0.030	1.00	18.0–20.0	8.0–11.0	—	N 0.10
TP 304L	0.035	2.00	0.045	0.030	1.00	18.0–20.0	8.0–13.0	—	N 0.10
TP 316	0.08	2.00	0.045	0.030	1.00	16.0–18.0	11.0–14.0	2.00–3.00	N 0.10
TP 316L	0.035	2.00	0.045	0.030	1.00	16.0–18.0	10.0–15.0	2.00–3.00	N 0.10
TP 321	0.08	2.00	0.045	0.030	1.00	17.0–19.0	9.0–12.0	—	Ti ≥ 5 × C
TP 347	0.08	2.00	0.045	0.030	1.00	17.0–19.0	9.0–13.0	—	Nb ≥ 10 × C
TP 310S	0.08	2.00	0.045	0.030	1.00	24.0–26.0	19.0–22.0	—	—
TP 317L	0.035	2.00	0.045	0.030	1.00	18.0–20.0	11.0–15.0	3.00–4.00	N 0.10

Note: Per ASTM A312 / A240. Values are maximum % by weight unless a range is shown. ASTM A312 permits 0.035% max carbon on L grades, where ASTM A240 plate specifies 0.030% max.

Mechanical Properties for Stainless Steel Flats supplied by Ritvik Metal Impex
Grade	Tensile Strength (min)	Yield Strength 0.2% (min)	Elongation (min)	Hardness (max)
TP 304	515 MPa (75 ksi)	205 MPa (30 ksi)	35%	90 HRB / 192 HBW
TP 304L	485 MPa (70 ksi)	170 MPa (25 ksi)	35%	90 HRB / 192 HBW
TP 316	515 MPa (75 ksi)	205 MPa (30 ksi)	35%	90 HRB / 192 HBW
TP 316L	485 MPa (70 ksi)	170 MPa (25 ksi)	35%	90 HRB / 192 HBW
TP 321	515 MPa (75 ksi)	205 MPa (30 ksi)	35%	90 HRB / 192 HBW
TP 347	515 MPa (75 ksi)	205 MPa (30 ksi)	35%	90 HRB / 192 HBW
TP 310S	515 MPa (75 ksi)	205 MPa (30 ksi)	35%	90 HRB / 192 HBW

Note: Specified minimum values in the solution-annealed condition, per ASTM A312 / A240. Elongation is measured in 50 mm (2 in.).

Size Range & Supply Condition for Stainless Steel Flats supplied by Ritvik Metal Impex
Parameter	Range
Round bar diameter	3 mm to 500 mm
Square bar	4 mm to 100 mm
Hex bar across flats	2 mm to 100 mm
Flat bar	3 mm to 100 mm thick × 10 mm to 500 mm wide
Length	100 mm to 6000 mm, or cut to length
Condition	Hot rolled, forged, cold drawn, centreless ground, peeled, polished, black
Standards	ASTM A276 / A479 / A484 / A582, ASTM A182 (forged), ASTM B164 / B166 / B446 (nickel)

Physical Properties for Stainless Steel Flats supplied by Ritvik Metal Impex
Property	SS 304 / 304L	SS 316 / 316L
Density	8.00 g/cm³	8.00 g/cm³
Melting range	1400–1450 °C	1375–1400 °C
Modulus of elasticity	193 GPa	193 GPa
Thermal conductivity (100 °C)	16.2 W/m·K	16.3 W/m·K
Specific heat (0–100 °C)	500 J/kg·K	500 J/kg·K
Thermal expansion (0–100 °C)	17.2 µm/m·°C	15.9 µm/m·°C
Electrical resistivity	720 nΩ·m	740 nΩ·m
Max continuous service temp.	≈ 870 °C	≈ 925 °C
Magnetic response (annealed)	Non-magnetic	Non-magnetic

Note: Values at 20 °C unless stated. Thermal expansion matters when austenitic stainless is welded to carbon steel.

Equivalent Grades Across Standards for Stainless Steel Flats supplied by Ritvik Metal Impex
ASTM / AISI	UNS	EN / DIN	EN Name	JIS	GB
304	S30400	1.4301	X5CrNi18-10	SUS 304	06Cr19Ni10
304L	S30403	1.4307	X2CrNi18-9	SUS 304L	022Cr19Ni10
316	S31600	1.4401	X5CrNiMo17-12-2	SUS 316	06Cr17Ni12Mo2
316L	S31603	1.4404	X2CrNiMo17-12-2	SUS 316L	022Cr17Ni12Mo2
321	S32100	1.4541	X6CrNiTi18-10	SUS 321	06Cr18Ni11Ti
347	S34700	1.4550	X6CrNiNb18-10	SUS 347	06Cr18Ni11Nb
310S	S31008	1.4845	X8CrNi25-21	SUS 310S	06Cr25Ni20
430	S43000	1.4016	X6Cr17	SUS 430	10Cr17

Note: Cross-reference for enquiries written against European, Japanese or Chinese standards. Equivalents are close but not always identical — check the composition limits before substituting.

Ordering & Supply for Stainless Steel Flats supplied by Ritvik Metal Impex
Parameter	Detail
Minimum order quantity	5 kg (mixed sizes within a grade can be combined to reach the MOQ)
Price basis	Ex-works Mumbai, FOB or CIF — quoted per kg, per metre or per piece depending on the form
Lead time	Ready stock dispatched in 1–3 working days; mill orders typically 2–6 weeks
Certification	Mill test certificate to EN 10204 3.1 as standard; 3.2 with third-party witness, IBR and NACE MR0175 on request
Testing available	PMI, IGC (ASTM A262), hydrostatic, ultrasonic, radiographic, impact and hardness testing
Third-party inspection	Bureau Veritas, TÜV, DNV, SGS, Lloyd's Register, Intertek, RITES and client/EPC inspection
Packing	Wooden crates or pallets, plastic caps on pipe ends, VCI wrapping where required, seaworthy export packing
Payment terms	Advance, against proforma invoice, or LC at sight for export orders
Supply area	Across India and export to the Middle East, Europe, the USA, Africa and South East Asia
Product form	Bars

Note: Cut lengths, non-standard sizes and special certification are available on request. Prices are quoted against grade, size, schedule and quantity.

Values shown are the specified minima and maxima published in the governing standards and are given for guidance. The mill test certificate supplied with your consignment reports the actual results for that heat.

Product Guide & Technical Article

Stainless Steel Flat Bars: Grades, Sizes & Engineering Applications

Stainless Steel flat bars are rectangular cross-section long products used in fabrication, architectural, and structural engineering for welded frames, supports, brackets, and decorative elements.

Grades & Properties

SS 304/304L — general fabrication. SS 316/316L — marine and chemical resistance. SS 321 — elevated temperature service. SS 410 — wear-resistant applications. Duplex 2205 — high strength structural use.

Size Range

Width 10mm to 200mm, thickness 3mm to 50mm. Standard lengths 3-6 meters, custom cut available. Tolerances to EN 10058 Class A or B.

Surface Conditions

Hot rolled (HL), cold drawn (bright), or polished (No.4/No.8). Polished flats for architectural and decorative applications where aesthetics matter.

Applications

Fabricated frames, conveyor components, food processing guards, architectural cladding, marine hardware, chemical plant supports, handrail systems.

About Our Stainless Steel Flats Supply

Ritvik Metal Impex is a trusted Stainless Steel Stainless Steel Flats supplier and stockist based in Mumbai, Maharashtra. We supply stainless steel flats across India including Mumbai, Pune, Delhi, Ahmedabad, Chennai, Hyderabad, Surat, and Bangalore, as well as export to UAE, Saudi Arabia, UK, USA, and South East Asia. Our stainless steel flats are sourced from reputed mills with full material traceability and supplied with Mill Test Certificates (MTC). We offer competitive pricing, ready stock for standard sizes, and fast dispatch for urgent requirements. Contact us for the best Stainless Steel stainless steel flats price in India.

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+91 7073895597|suresh.prajapat@ritvikmetalimpex.com

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Stainless Steel Flats

Stainless Steel Flats Specifications