Steel 1132-IH (Induction hardened)
Heat-treated state
AISI/SAE 1132 · UNS G11320
Pick for wear surfaces on shafts/journals where a tough machined core plus 50+ HRC skin is wanted.
Values for the IH condition
Other 1132 tempers and conditions
1132 is listed in 8 conditions; see the grade overview at 1132.
Compare all 8 conditionsHide
| Condition · open for datasheet | Best for | Yield MPa | Tensile MPa | Elong. % | Hardness | Conductivity |
|---|---|---|---|---|---|---|
Annealed | Chosen when maximum softness/ductility is needed before heavy cold work or deep drilling. | 290 | 520 | 22 | 150 HB | 10 % IACS |
Hot rolled | Lowest-cost form for parts that will be fully machined or subsequently heat treated; scale and loose tolerances. | 325 | 570 | 16 | 167 HB | — |
Normalized | Refines grain and homogenizes forgings/bar before machining or quench-and-temper. | 360 | 600 | 18 | 175 HB | 10 % IACS |
Cold Drawn, Stress Relieved | Use when tight straightness must be kept after machining thin or asymmetric parts. | 490 | 600 | 14 | 179 HB | 10 % IACS |
CDDefault Cold drawn | Standard stock condition for screw-machine work: good size tolerance, straightness and highest as-supplied strength. | 530 | 620 | 12 | 183 HB | — |
IHThis page Induction hardened | Pick for wear surfaces on shafts/journals where a tough machined core plus 50+ HRC skin is wanted. | 560 | 700 | 10 | 53 HRC | 9 % IACS |
quenched and tempered, high-temper | Balanced strength/toughness condition for machined shafts and fittings of moderate section. | 650 | 820 | 17 | 24 HRC | 9 % IACS |
quenched and tempered, medium-temper | Higher-strength condition for pins, couplings and studs where wear and load are both moderate-high. | 780 | 950 | 14 | 30 HRC | 9 % IACS |
What is 1132-IH?
1132-IH is 1132 heat treated to IH — pick for wear surfaces on shafts/journals where a tough machined core plus 50+ HRC skin is wanted. 1132-IH has a yield strength of 560 MPa (81.2 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 73% of steel grades. Elongation at break is 10% and the elastic modulus is 205 GPa (29.7 Msi). 1132-IH has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F). CD is the default condition FabDigit quotes; IH is available on request or by drawing note.
Advantages
- Low embodied carbon — 1.9 kg CO₂/kg, better than 92% of steel grades
Limitations
- Difficult to weld — 5/100, worse than 100% of steel grades
- Limited formability — 5/100, worse than 99% of steel grades
- Low fracture toughness — 35 MPa·√m (31.9 ksi·√in), worse than 94% of steel grades
- Limited service temperature — 200°C (392 °F), worse than 93% of steel grades
- Difficult to machine — 25/100, worse than 93% of steel grades
1132-IH properties
Typical room-temperature values for 1132-IH; 22 are specific to this condition. Other listed values are 1132 reference data and may not represent this condition. Bars are the position among steel grades.
Physical3
1132-IH has a density of 7.85 g/cm³ (0.284 lb/in³), heavier than 56% of steel grades. It melts at 1,420°C (2,588 °F).
Mechanical16
1132-IH has a yield strength of 560 MPa (81.2 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 73% of steel grades. Elongation at break is 10% and the elastic modulus is 205 GPa (29.7 Msi).
Thermal6
1132-IH is rated for continuous service to 200°C (392 °F). It conducts heat at 46 W/m·K (26.6 BTU/hr·ft·°F), better than 71% of steel grades. Thermal expansion is 11.7 µm/m·K (6.5 µin/in·°F).
Electrical3
1132-IH conducts electricity at 9 % IACS, better than 71% of steel grades.
Chemical & Environmental3
Corrosion resistance is not recommended (10/100), worse than 86% of steel grades.
Sustainability4
Producing a kilogram of 1132-IH takes about 25 MJ of energy and emits 1.9 kg of CO₂ — less than 82% of steel grades. Typical recycled content is 30%.
Manufacturability8
1132-IH's machinability is poor (25/100, worse than 93% of steel grades); weldability not recommended (5/100); formability not recommended (5/100).
Values are nominal handbook figures for design screening. Confirm any required mill or lot documentation when quoting.
Working with 1132-IH
Is 1132 easy to machine?
Excellent screw-machine steel (~75 % of 1212); run high speeds with sulfurized oils, MnS gives short chips and good finish on turned diameters.
Can 1132 be welded?
Poor — high S promotes hot cracking and porosity; if unavoidable use low-hydrogen consumables, preheat 150–250 °C and expect reduced joint ductility.
Can 1132 be formed, bent or molded?
Limited cold formability, especially transverse to rolling; bend generously or hot form at 900–1200 °C.
What surface finishes work on 1132?
Not anodizable; protect with oil, phosphate, black oxide, zinc or nickel plating — plate carefully as MnS pits can trap electrolyte.
1132 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 J403 heat analysis | 0.27 – 0.34 | 0.3 |
| Mnhigh-Mn free-machining series | 1.35 – 1.65 | 1.5 |
| P | ≤ 0.04 | 0.02 |
| Sresulfurized; forms MnS chip breakers | 0.08 – 0.13 | 0.1 |
| Siusually not specified for resulfurized grades | ≤ 0.1 | 0.05 |
| Fe | balance | — |
1132-IH — frequently asked
What is 1132-IH used for?
1132-IH is typically used for shafts, studs, bolts and machined fittings. In short: stronger than 1215; free-cutting and heat-treatable; not for welded assemblies.
What is the yield strength of 1132-IH?
1132-IH has a typical yield strength of 560 MPa (81.2 ksi) and a tensile strength of 700 MPa (102 ksi) — stronger than 73% of steel grades. Strength varies by condition: see the 8 listed tempers.
Is 1132-IH easy to machine?
Not especially — machinability is rated poor (25/100, worse than 93% of steel grades). Excellent screw-machine steel (~75 % of 1212); run high speeds with sulfurized oils, MnS gives short chips and good finish on turned diameters.
Can 1132-IH be welded?
Not readily — weldability is rated not recommended (5/100). Poor — high S promotes hot cracking and porosity; if unavoidable use low-hydrogen consumables, preheat 150–250 °C and expect reduced joint ductility.
What surface finishes work on 1132-IH?
Not anodizable; protect with oil, phosphate, black oxide, zinc or nickel plating — plate carefully as MnS pits can trap electrolyte.
Can 1132-IH be formed, bent or molded?
Limited cold formability, especially transverse to rolling; bend generously or hot form at 900–1200 °C.
What is the maximum service temperature of 1132-IH?
1132-IH is rated for continuous use to about 200°C (392 °F). Strength falls off well before that limit — check the elevated-temperature data for load-bearing parts.
What is the difference between 1132-CD and 1132-ANN?
CD is the default condition — standard stock condition for screw-machine work: good size tolerance, straightness and highest as-supplied strength. ANN: chosen when maximum softness/ductility is needed before heavy cold work or deep drilling. Yield strength is 530 MPa in CD versus 290 MPa in ANN.
Sources
- SAE J403 — Chemical Compositions of SAE Carbon Steels — SAE International (2014)
- ASTM A29/A29M — Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements — 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 (free-machining steel ratings) — ASM International (1989)
- Typical mechanical property tables for AISI 1132 cold drawn / hot rolled bar — MatWeb / mill data compilations (2023)
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.