S1 Tool & Alloy Steel Round Bars Supplier, Stockist in Mumbai, India
About S1 Tool & Alloy Steel Round Bars
IMI Alloys India LLP manufactures and supplies S1 Tools & Alloys Steel Round Bars. As an S1 tool steel manufacturer, we produce this medium-carbon alloy tool steel with tempered hardness below 250 HB. We supply S1 steel alloy round bars from bar stock or plate to your diameter, length and finish; these S1 tool steel round bars are supplied to tight tolerances on request. As an S1 tool steel supplier, we source raw materials exclusively from qualified mills, ensuring every S1 tool and alloy steel round bar consistently meets exact specifications with every order.
S1 alloy steel works as a shock-resisting tool steel and this S1 tool steel resists cracking under repeated strikes. It keeps its toughness in the hardened condition, letting it absorb impact where strike energy passes straight through the tool. Metallurgists group grades like S1 with other shock-resisting tool steels, the S-series, rather than with stainless grades. These steels reach their peak hardness toward the upper end of their tempering range.
Table of Content
- What is S1 Tool & Alloy Steel Round Bars
- Standard Specification For S1 Tool & Alloy Steel Round Bars
- S1 Tool & Alloy Steel Round Bars Equivalent Grades
- Chemical Composition of S1 Tool & Alloy Steel Round Bar
- Mechanical Properties of S1 Tool & Alloy Steel Round Bars
- Searches Related to S1 Tool & Alloy Steel Round Bars
- S1 Tool & Alloy Steel Round Bars Applications
- Export Destinations for S1 Tool & Alloy Steel Round Bars
Why Choose S1 Tool & Alloy Steel Round Bars
S1 Tool & Alloy Steel Round Bars combine hardness, toughness, and dimensional accuracy in one bar, and buyers pick this grade when tools face repeated impact rather than steady abrasive wear alone. S1 tool steel handles that load because its chromium-tungsten-vanadium composition keeps toughness high even after hardening into the 50-58 HRC range, letting a punch or chisel absorb hammer blows without chipping at the edge. Wear resistance and machinability before heat treatment shorten the time spent finishing dies and shear blades to size. Manufacturers turn to this grade for chisels, punches, hammers, forging dies, and shear blades built to take direct, repeated impact. Choosing the right S1 tool steel supplier matters as much as the grade itself, since inconsistent chemistry shows up later as premature cracking. IMI Alloys India LLP works as an S1 tool steel manufacturer supplying ASTM A681/1.2550 round bars across a range of sizes and specifications, tested to hold quality standards batch after batch.
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The treating resistance of gather stainless steels can be moved forward by the expansion of silicon, which too shapes a micro-structure to stand up to twisting in tempered conditions. It is utilized for applications like hammers, chisels etc. Our fabricated S1 Tools & Alloys Steel Round Bars exhibit various incomparable characteristics. These bars can be quickly and easily machinable by standard implies. However, it is in a tempered state, and customary strategies shape the alloy. The alloy may be welded by the traditional method, and the alloy can be cold worked within the toughened condition.
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IMI Alloys India LLP fabricates these first-rate quality S1 Tools & Alloys Steel Round Bars primarily for Mandrel drawing steel tubes. Medium temperature applications incorporate manufacturing, shaping and pass on, punching, punching and decrease passing. Other industrial applications where S1 tools and alloy round bars are shear edge working and medium temperature. We will conduct quality tests for products and deliver them appropriately with safety measures.
Specifications of S1 Tool & Alloy Steel Round Bars
- Standard : ASTM A681, ASME SA681
- Dimensions : EN, DIN, JIS, ASTM, BS, ASME, AISI
- Form : Round
- Diameter : 10 mm ~ 900 mm
- Size : 0.08 mm to 25.00 mm
- Diameter Range : 0.040 mm – 12 mm (0.0016” – 0.4724”)
- Application : Lathe Tools, Milling Cutter, Cutter Blades, Boring Tools, Twist drills, Milling Knives, Reamers, Taps, Metalcutting saws, Screw Cutting Tools, File Cutter’s Chissels, Drills, Hobs, Drill Bits, Tread cutting tools etc
Equivalent Grades of S1 Tool & Alloy Steel Round Bars
| AISI / SAE | DIN / W.Nr | UNS | JIS | GB | AFNOR |
| S1 | 1.2550 | T41901 | G4053 | GB/T 3077 | 55 WC 20 |
Chemical Composition of S1 Tool & Alloy Steel Round Bar
| C | Mn | Si | Cr | Ni | Mo | W | V | Cu | P | S |
| 0.40-0.55 | 0.10-0.40 | 0.15-1.20 | 1.00-1.80 | 0.30 | 0.50 | 1.50-3.00 | 0.15-0.30 | 0.25 | 0.03 | 0.03 |
Mechanical Properties of S1 Tool & Alloy Steel Round Bars
| Properties | Metric | Imperial |
|---|---|---|
| Hardness, Rockwell C (air cooled from 899°C, 30 mins) | 54.5 | 54.5 |
| 56 | 56 | |
| Hardness, Rockwell C (air cooled from 982°C, 30 mins) | 56.5 | 56.5 |
| Modulus of elasticity | 207 GPa | 30000 ksi |
| Charpy impact (V-notch; oil quenched from 954°C; 149°C temper temperature) | 10.8 J | 8.00 ft-lb |
| Charpy impact (V-notch; oil quenched from 954°C; 625°C temper temperature) | 29.8 J | 22.0 ft-lb |
| Machinability (1% carbon steel) | 70.0 – 75.0% | 70.0 – 75.0% |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Thermal Properties of S1 Tool & Alloy Steel Round Bars
| Properties | Conditions | ||
|---|---|---|---|
| T (°C) | Treatment | ||
| Thermal expansion | 12.4 x 10-6/ºC | 20-100 | – |
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Applications For S1 Tool & Alloy Steel Round Bars
Generally, S1 tool steels are used for long run tooling applications, Some main applications for S1 Tool & Alloy Steel Round Bars materials are:
- Hot punches
- die casting dies
- forging dies
- hot shear blades
- hot gripper dies
- extrusion tooling
Export Destinations for S1 Tool & Alloy Steel Round Bars
Countries
Belarus, Kenya, Australia, Algeria, Croatia, Nepal, Mexico, Mongolia, Singapore, Tunisia, Namibia, Argentina, United Kingdom, Indonesia, United States, Netherlands, Oman, United Arab Emirates, Estonia, Sweden, Norway, Trinidad & Tobago, Spain, Nigeria, China, Tibet, Bangladesh, Pakistan, Czech Republic, Belgium, New Zealand, Malaysia, Brazil, Morocco, Macau, France, Austria, Zimbabwe, Greece, Iran, Costa Rica, Germany, Gambia, Ghana, Sri Lanka, Iran, Philippines, India, Yemen, Hungary, Colombia, Bhutan, Egypt, Azerbaijan, Romania, Afghanistan, Slovakia, Bahrain, Israel, Switzerland, Japan, South Korea, Poland, South Africa, Nigeria, Thailand, Taiwan, Turkey, Ireland, Jordan, Chile, Mexico, Finland, Venezuela, Italy, Canada, Libya, Denmark, Qatar, Bolivia, Iraq, Vietnam, Serbia, Hong Kong, Bulgaria, Gabon, Chile, Ukraine, Puerto Rico, Lebanon, Angola, Saudi Arabia, Ecuador, Kuwait, Peru, Portugal, Lithuania, Poland, Russia, Kazakhstan.
Cities
Singapore, Seoul, Al Khobar, Doha, Perth, Coimbatore, Mumbai, Al Jubail, Thiruvananthapuram, Sydney, New York, Surat, Montreal, Indore, Busan, Calgary, Cairo, Vadodara, Hong Kong, Howrah, Gurgaon, Mexico City, Pimpri-Chinchwad, Chennai, New Delhi, Petaling Jaya, Visakhapatnam, Dubai, Bogota, Port-of-Spain, Chiyoda, Jeddah, Atyrau, Rajkot, Haryana, Geoje-si, Bengaluru, Karachi, Faridabad, Jakarta, Chandigarh, Sharjah, Gimhae-si, Lagos, Secunderabad, Dallas, Edmonton, Noida, Baroda, Melbourne, Aberdeen, Pune, Ahmedabad, Bangkok, Istanbul, Colombo, Hanoi, Jamshedpur, Granada, Ankara, Los Angeles, Nashik, Caracas, Manama, Toronto, Kuala Lumpur, Ranchi, Vung Tau, Tehran, Bhopal, London, Madrid, Riyadh, Algiers, Kolkata, Navi Mumbai, Santiago, Kanpur, Dammam, Houston, La Victoria, Abu Dhabi, Moscow, Ahvaz, Courbevoie, Ludhiana, Thane, Brisbane, Muscat, Ho Chi Minh City, Ernakulam, Nagpur, Ulsan, Kuwait City, Rio de Janeiro, Hyderabad, Milan, Jaipur.
FAQs
What is S1 tool steel?
S1 tool steel is a medium-carbon, chromium-tungsten alloy (AISI S1, DIN 1.2550) built for shock and impact resistance in cold-work tooling.
What are S1 Tool & Alloy Steel Round Bars used for?
These round bars go into chisels, punches, hammers, forging dies, and shear blades, tooling that takes repeated shock rather than steady abrasive wear.
Can S1 tool steel be heat treated?
Yes. S1 hardens by oil quenching and tempers to 50-58 HRC, giving it deep hardenability through thick round bar sections.
What are the advantages of S1 tool steel round bars?
These bars combine high impact toughness, good wear resistance, and reliable machinability before hardening, so tooling holds an edge through thousands of strike cycles.
What sizes are available in S1 Tool & Alloy Steel Round Bars?
IMI Alloys India LLP supplies S1 round bars from 10 mm to 900 mm diameter, cut and finished to the length and tolerance you specify.
How do I choose a reliable S1 tool steel supplier?
Check for mill test certificates, ASTM A681 compliance, and consistent chemistry across batches. That combination determines whether tooling performs the same way every time.
Have Any Questions !
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IMI ALLOYS INDIA LLP is a notable manufacturer, supplier, stockist, and exporter of bars – round bars, square bars, flat bars, etc. in various materials like Tool Steel, Alloy Steel, and High-Speed Steel in Mumbai, India. We are authorized dealers of Graphite India Limited (POWMEX STEELS DIVISION) and also the only authenticated stockist of Nachi Fujikoshi Corp in India for their High-Speed Steel, Powder Metallurgy, Tool Steel, and Alloy Steel Products.
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