Bundle of stainless steel round bars with colour-coded grade markings on the ends

Stainless Steel · Ferrous

Round, Square & Hex Bars

Name: Stainless Steel Round, Square & Hex Bars
Brand: Ritvik Metal Impex
SKU: RMI-009

Round, square and hexagonal bars as per ASTM A276/A479 (Grade 202/304/304L/316/316L/321/347/410/420/904L), Nickel Alloys and Duplex Steel. Size range 3mm to 75mm dia, ready stock with Mill Test Certificate, cold drawn & annealed, tolerance H9/H11.

Material

Stainless Steel

Form

Bars

Round, Square & Hex Bars Specifications

Chemical Composition for Round, Square & Hex Bars 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 Round, Square & Hex Bars 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 Round, Square & Hex Bars 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 Round, Square & Hex Bars 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 Round, Square & Hex Bars 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 Round, Square & Hex Bars 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 Bars: Round, Square & Hex — Properties & Uses

Stainless steel bars are solid long products used for machining precision components, fasteners, shafts, and structural elements. Their combination of corrosion resistance and machinability makes them essential across engineering industries.

Bar Types & Profiles

Round bars are the most versatile, used for shafts, pins, bolts, and turned components. Square bars suit key stocks, structural supports, and architectural elements. Hexagonal bars are primarily used for machining nuts, fittings, and valve bodies on automatic lathes.

Manufacturing Process

Produced by hot rolling followed by cold drawing or centreless grinding to achieve tight dimensional tolerances (H9/H11). Cold drawn bars offer better surface finish and dimensional accuracy compared to hot rolled material.

Grade & Size Range

Grades: SS 202, 304, 304L, 316, 316L, 321, 347, 410, 420, 904L, Duplex 2205, and Nickel Alloys. Round bar sizes from 3mm to 250mm diameter; square from 6mm to 100mm; hex from 5mm AF to 100mm AF.

Applications

Machined components, fastener blanks, pump and valve shafts, food processing equipment, pharmaceutical machinery, marine hardware, and architectural fittings.

About Our Round, Square & Hex Bars Supply

Ritvik Metal Impex is a trusted Stainless Steel Round, Square & Hex Bars supplier and stockist based in Mumbai, Maharashtra. We supply round, square & hex bars 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 round, square & hex bars 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 round, square & hex bars price in India.

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Technical Guides

In-depth reading on grades, standards and specification for this product.

Grade Selection

SS 304 vs SS 316: How to Choose the Right Stainless Steel Grade

Stainless steel 304 vs 316 compared: molybdenum, PREN pitting resistance, L-grades, temperature limits, and when the 316 price premium is worth paying.

Read Guide →Grade Selection

904L Stainless Steel: Where the Copper Earns Its Keep

904L is specified for sulphuric and phosphoric acid service. What the copper addition does, how it compares with 316 and duplex, and where it is the wrong choice.

Read Guide →

Need a price for Round, Square & Hex Bars?

Tell us the grade, size, schedule and quantity and we will confirm stock position and a firm price. Every consignment ships with a mill test certificate traceable to the heat number.

+91 7073895597|suresh.prajapat@ritvikmetalimpex.com

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Round, Square & Hex Bars

Round, Square & Hex Bars Specifications