Steel 1119-HR (Hot rolled)
Supply condition
AISI/SAE 1119 · UNS G11190
Cheapest form for larger machined parts where surface finish and size tolerance are recut anyway.
Values for the HR condition
Other 1119 tempers and conditions
1119 is listed in 6 conditions; see the grade overview at 1119.
Compare all 6 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
HRThis page Hot rolled | Cheapest form for larger machined parts where surface finish and size tolerance are recut anyway. | 235 | 425 | 25 | 121 HB | — |
Solution annealed | Softest condition, used when heavy cold forming or maximum dimensional stability is needed. | 250 | 400 | 30 | 116 HB | 10 % IACS |
Normalized | Used to refine grain and homogenize forgings before carburizing or final machining. | 275 | 440 | 28 | 131 HB | 9.8 % IACS |
Cold Drawn, Stress Relieved | Choose when parts must stay straight/dimensionally stable after heavy unbalanced machining. | 380 | 470 | 18 | 137 HB | 9.5 % IACS |
CDDefault Cold drawn | Standard stocked screw-machine bar: best size tolerance, straightness and chip control. | 415 | 495 | 15 | 143 HB | — |
Carburized, quenched and tempered | Use when the machined part needs a wear-resistant hard case (58–62 HRC) over a tough low-carbon core. | 430 | 620 | 12 | 60 HRC | — |
What is 1119-HR?
1119-HR is 1119 supplied in the HR condition — cheapest form for larger machined parts where surface finish and size tolerance are recut anyway. 1119-HR has a yield strength of 235 MPa (34.1 ksi) and a tensile strength of 425 MPa (61.6 ksi) — weaker than 96% of steel grades. Elongation at break is 25% and the elastic modulus is 200 GPa (29 Msi). 1119-HR has a density of 7.87 g/cm³ (0.284 lb/in³), heavier than 92% of steel grades. It melts at 1,425°C (2,597 °F). CD is the default condition FabDigit quotes; HR is available on request or by drawing note.
Advantages
- Easy to machine — 88/100, better than 99% of steel grades
- Conducts heat well — 51 W/m·K (29.5 BTU/hr·ft·°F), better than 92% of steel grades
- Low embodied carbon — 1.9 kg CO₂/kg, better than 92% of steel grades
- Ductile — tolerates forming and impact — 25%, better than 77% of steel grades
- High electrical conductivity — 9.5 % IACS, better than 75% of steel grades
Limitations
- Low strength — 235 MPa (34.1 ksi), worse than 96% of steel grades
- Hard to polish — 40/100, worse than 96% of steel grades
- Difficult to weld — 25/100, worse than 77% of steel grades
1119-HR properties
Typical room-temperature values for 1119-HR; 12 are specific to this condition. Other listed values are 1119 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
1119-HR has a density of 7.87 g/cm³ (0.284 lb/in³), heavier than 92% of steel grades. It melts at 1,425°C (2,597 °F).
Mechanical14
1119-HR has a yield strength of 235 MPa (34.1 ksi) and a tensile strength of 425 MPa (61.6 ksi) — weaker than 96% of steel grades. Elongation at break is 25% and the elastic modulus is 200 GPa (29 Msi).
Thermal6
1119-HR is rated for continuous service to 400°C (752 °F). It conducts heat at 51 W/m·K (29.5 BTU/hr·ft·°F), better than 92% of steel grades. Thermal expansion is 11.7 µm/m·K (6.5 µin/in·°F).
Electrical3
1119-HR conducts electricity at 9.5 % IACS, better than 75% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of 1119-HR takes about 25 MJ of energy and emits 1.9 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 35%.
Manufacturability7
1119-HR's machinability is excellent (88/100, better than 99% of steel grades); weldability poor (25/100); formability fair (50/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1119-HR
Is 1119 easy to machine?
Outstanding on automatics — high speeds, short broken chips, long tool life; a rating benchmark near 100 % of 1212, best with sharp tools and adequate coolant.
Can 1119 be welded?
Not recommended for structural welds: high sulfur promotes hot cracking and porosity; if unavoidable use low-hydrogen filler, preheat ~150 °C and low restraint.
Can 1119 be formed, bent or molded?
Fair cold formability along the rolling direction only; sulfide stringers cause splitting on tight transverse bends and heading — anneal or use a resulfurized-free grade for severe forming.
What surface finishes work on 1119?
No anodizing; protect with zinc or nickel plating, black oxide, phosphate + oil; inclusions can leave pits after fine polishing or bright plating.
1119 chemical composition (wt %)
Limits by weight percent from the governing specification, written the way the spec states them — a single maximum for impurities, a range for alloying elements, and the base element as balance. Nominal is the typical mid-range value.
| Element | Spec limit (wt %) | Nominal |
|---|---|---|
| CSAE/AISI 1119 (UNS G11190) | 0.14 – 0.2 | 0.17 |
| Mnbinds S as MnS | 1 – 1.3 | 1.15 |
| P | ≤ 0.04 | 0.02 |
| Sresulfurized for machinability | 0.24 – 0.33 | 0.28 |
| Fe | balance | — |
1119-HR — frequently asked
What is 1119-HR used for?
1119-HR is typically used for shafts, pins and carburized parts. In short: near 100% of 1212; free-machining with case hardening; avoid structural welding.
What is the yield strength of 1119-HR?
1119-HR has a typical yield strength of 235 MPa (34.1 ksi) and a tensile strength of 425 MPa (61.6 ksi) — weaker than 96% of steel grades. Strength varies by condition: see the 6 listed tempers.
Is 1119-HR easy to machine?
Yes — machinability is rated excellent (88/100, better than 99% of steel grades). Outstanding on automatics — high speeds, short broken chips, long tool life; a rating benchmark near 100 % of 1212, best with sharp tools and adequate coolant.
Can 1119-HR be welded?
Not readily — weldability is rated poor (25/100). Not recommended for structural welds: high sulfur promotes hot cracking and porosity; if unavoidable use low-hydrogen filler, preheat ~150 °C and low restraint.
What surface finishes work on 1119-HR?
No anodizing; protect with zinc or nickel plating, black oxide, phosphate + oil; inclusions can leave pits after fine polishing or bright plating.
Can 1119-HR be formed, bent or molded?
Fair cold formability along the rolling direction only; sulfide stringers cause splitting on tight transverse bends and heading — anneal or use a resulfurized-free grade for severe forming.
What is the maximum service temperature of 1119-HR?
1119-HR is rated for continuous use to about 400°C (752 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1119-CD and 1119-HR?
CD is the default condition — standard stocked screw-machine bar: best size tolerance, straightness and chip control. HR: cheapest form for larger machined parts where surface finish and size tolerance are recut anyway. Yield strength is 415 MPa in CD versus 235 MPa in HR.
Sources
- SAE J403 — Chemical Compositions of SAE Carbon Steels — SAE International (2014)
- ASTM A29/A29M — Steel Bars, Carbon and Alloy, Hot-Wrought — ASTM (2020)
- ASTM A108 — Steel Bar, Carbon and Alloy, Cold-Finished — ASTM (2018)
- ASM Handbook Vol.1: Properties and Selection — Irons, Steels, and High-Performance Alloys — ASM International (1990)
- ASM Handbook Vol.16: Machining (machinability ratings) — ASM International (1989)
- GB/T 8731 (Y15Mn equivalent) — SAC (2008)
Property data is compiled from published supplier and standards handbooks and normalised for comparison. Nothing on this page is a certification — request mill certs, CoC or material test reports with your order.