About H11 Tool & Alloy Steel Round Bars
IMI Alloys India LLP is a provider and fabricator well known for H11 Tool & Alloy Steel Round Bars. Our steel bars are highly impacted due to its toughness as well as characterized by red hardness. We offer these steel round bars in assorted sizes, shapes, standards, and specifications and required customized bars to fit in the system as on-demand. These are available and largely demanded in forged, threaded, hot worked and cold worked types and many others.
Table of Content
IMI Alloys India LLP offers H11 Steel Round bars endow with excellent resistance against various media containing acids, chlorides and halides. Our round bars are mostly subjected to heat operating systems due to its excellent thermal conductivity. These round bars are highly resistant to thermal fatigue cracking and crevice. Intergranular corrosion is eliminated and it opposes pitting excellently. This grade is conductive to thermal and electro potential moreover combat to chemical reducing agents. As a result, corrosion applications are using these bars with a high anti-corrosive feature.
Country | USA | German | Japan | British |
Standard | ASTM A681 | DIN EN ISO 4957 | JIS G4404 | BS 4659 |
Grades | H11/T20811 | 1.2343/X37CrMoV5-1 | SKD6 | BH11 |
ASTM A681 | C | Mn | P | S | Si | Cr | V | W | Mo | ||||||
H11/T20811 | 0.35 | 0.45 | 0.20 | 0.60 | 0.03 | 0.03 | 0.80 | 1.25 | 4.75 | 5.50 | 0.30 | 0.60 | … | 1.10 | 1.60 |
DIN ISO 4957 | C | Mn | P | S | Si | Cr | V | W | Mo | ||||||
1.2343/X37CrMoV5-1 | 0.28 | 0.35 | 0.10 | 0.40 | … | … | 0.80 | 1.20 | 2.70 | 3.20 | 0.40 | 0.70 | … | 1.10 | 1.50 |
JIS G4404 | C | Mn | P | S | Si | Cr | V | W | Mo | ||||||
SKD6 | 0.32 | 0.42 | … | 0.50 | 0.03 | 0.03 | 0.80 | 1.20 | 4.50 | 5.50 | 0.30 | 0.50 | … | 1.00 | 1.50 |
BS 4659 | C | Mn | P | S | Si | Cr | V | W | Mo | ||||||
BH11 | 0.32 | 0.40 | … | 0.40 | 0.35 | 0.35 | 0.85 | 1.15 | 4.75 | 5.25 | 0.30 | 0.50 | … | 1.25 | 1.75 |
Properties | Metric | Imperial |
Hardness, Rockwell C (air cooled from 982°C, 45 mins) | 52.5 | 52.5 |
Hardness, Rockwell C (air cooled from 1010°C, 45 mins) | 56 | 56 |
Hardness, Rockwell C (air cooled from 1038°C, 45 mins) | 57 | 57 |
Modulus of elasticity | 207 GPa | 30000 ksi |
Modulus of elasticity (@538°C/1000°F) | 159 GPa | 23000 ksi |
Modulus of elasticity (@204°C/400°F) | 190 GPa | 27500 ksi |
Charpy impact (V-notch; air cooled from 1010°C;535°C temper temperature) | 13.6 J | 10.0 ft-lb |
Charpy impact (V-notch; air cooled from 1010°C;650°C temper temperature) | 27.1 J | 20.0 ft-lb |
Charpy impact (V-notch; air cooled from 1010°C;370°C temper temperature) | 33.9 J | 25.0 ft-lb |
Machinability (1% carbon steel) | 75.0 – 80.0% | 75.0 – 80.0% |
Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
Properties | Metric | Imperial |
Thermal expansion (@20-100ºC/68-212ºF) | 11.9 x 10-6/ºC | 6.63 µin/in°F |
Thermal conductivity (@100ºC/212ºF) | 42.2 W/mK | 292.9 in/hr.ft².°F |
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Generally, H11 tool steels are used for long run tooling applications, Some main applications for H11 Tool & Alloy Steel Round Bars materials are: