Hilti HIT-HY 170 Injection Mortar - Product Technical Datasheet

Injection Mortar System

Hilti HIT-HY 170 330 ml foil pack (also available as 500 ml foil pack)

Suitable for Rebar diameters (φ8 - φ32)

Benefits

Suitable for concrete C12/15 to C50/60
Suitable for dry and water saturated concrete
High loading capacity and fast cure
High corrosion resistant
For rebar diameters up to 32 mm
Automatic borehole cleaning using Hilti hollow drill bit for hammer drilling and accurate dosing with HDE
Manual cleaning for drill hole sizes ≤ 20 mm and embedment depth hef ≤ 10d
Suitable for embedment depth up to 1250 mm depending on the rebar diameter

Base Material

Concrete

Load Conditions

Static/Quasi-static
Seismic
Fire resistance

Installation Conditions

Hammer drilled holes
Hollow drill-bit drilling (Note: only for diameter range 8 mm – 25 mm)

Other Information

PROFIS Engineering Design Software
Concrete-to-Concrete connections Handbook

Approvals, Certificates, and Instructions for Use

Approvals/Certificates: ETA-15/0297 (Static and quasi-static / Seismic / Fire)

Authority/Laboratory: DIBt, Berlin

Date of Issue: 25-07-2025

Instructions for use can be viewed via links or QR codes on the Hilti webpage.

Instructions for Use (IFU)

Material	Injection mortar	Dispenser
IFU	IFU HIT-HY 170	IFU HDM, IFU HDE 500-A12, IFU HDE-500 22

Link to Hilti Webpage

Injection mortars / Dispenser: Hilti HIT-HY 170, HDE 500-22, HDE 500-A12, HDM 500

Mechanical Properties and Dimensions of Rebar

Mechanical properties and dimensions of the rebars can be taken from the ETA.

Material Quality

Part	Material
Rebar (EN 1992-1-1)	Bars and de-coiled rods class B or C according to NDP or NCL of EN 1992-1-1

Static and Quasi-Static Loading

Based on ETA 15/0297. Design according to EN 1992-1-1.

Data Applicability:

According to EN 1992-1-1 for good bond conditions. For all other bond conditions, multiply the values by 0.7.
Applies to Hammer drilling, Hammer drilling with Hilti hollow drill bit (TE-CD, TE-YD), and Compressed air drilling.
Design values of the bond strength for a working life of 50 Years.

Design Bond Strength (fbd,PIR)

Values in N/mm² for above methods of drilling techniques according to mortar IFU & ETA-15/0297.

Rebar - size [mm]	Concrete class
Rebar - size [mm]	C12/15	C16/20	C20/25	C25/30	C30/37	C35/45	C40/50	C45/55	C50/60
φ 8 - φ 12	1.6	2.0	2.3	2.7	3.0	3.4	3.7	3.7	3.7
φ 14 - φ 25	1.6	2.0	2.3	2.7	3.0	3.4	3.4	3.4	3.4
φ 26 - φ 32	1.6	2.0	2.3	2.7	2.7	2.7	2.7	2.7	2.7

Minimum Anchorage Length and Minimum Lap Length

Post-installed rebar applications as per EN 1992-1-1.

Typical Examples

Lap splice applications: Illustrates two rebars overlapping to transfer load.

End anchorage applications: Shows a rebar anchored at the end of a concrete element, suitable for simply supported or compression load-only connections.

The minimum anchorage length (lb,min) and the minimum lap length (l0,min) for applications designed as per EN 1992-1-1 shall be multiplied by the relevant Amplification factor (αlb) in the table below.

Amplification Factor (αlb)

For minimum anchorage length and minimum lap length according to mortar IFU & ETA-15/0297.

Rebar - size [mm]	Concrete class
C12/15	C16/20	C20/25	C25/30	C30/37	C35/45	C40/50	C45/55	C50/60
φ 8 - φ 32	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0	1.0

Refer to dispenser tables for data on dispensers and corresponding maximum embedment depth (lv,max) due to mortar installation limitations.

Anchorage and Lap Length Data

For characteristic steel strength fyk = 500 N/mm² for good bond conditions.

Definitions:

lb,min: Minimum anchorage length for simply supported connections
l0,min: Minimum anchorage length for overlap splice joint
lbd: Anchorage length for simply supported connections
l0,PIR: Anchorage length for overlap joint
α2: Coefficient of concrete cover

For specific design cases, refer to PROFIS Engineering. For detailed technical information, refer to the Concrete-to-Concrete connections Handbook.

Detailed Anchorage and Lap Length Tables

(Note: Tables below provide detailed values for lb,min, l0,min, lbd, and l0,PIR across various rebar sizes, concrete classes, and steel utilization levels. Highlighted values exceed the maximum length given in ETA-15/0297 and IFU.)

Rebar Size [mm]	Concrete Class	Design Resistance [kN]	Steel utilization [%]	Anchorage/Lap Length [mm]		lbd / l0,PIR [mm]
Rebar Size [mm]	Concrete Class	Design Resistance [kN]	Steel utilization [%]	lb,min	l0,min	lbd (α2=1)	lbd (α2=0.7)	l0,PIR (α2=1)	l0,PIR (α2=0.7)
8	C20/25	21.9	100	113	200	378	265	567	4.1
		15.3	70	100	200	265	185	397	278
		10.9	50	100	200	189	132	284	199
	C50/60	21.9	100	100	200	235	165	353	247
		15.3	70	100	200	165	115	247	173
		10.9	50	100	200	118	82	176	123
10	C20/25	34.1	100	142	213	473	331	709	496
		23.9	70	100	200	331	232	496	348
		17.1	50	100	200	236	165	355	248
	C50/60	34.1	100	100	200	294	206	441	309
		23.9	70	100	200	206	144	309	216
		17.1	50	100	200	147	103	220	154
12	C20/25	49.2	100	170	255	567	397	851	596
		34.4	70	120	200	397	278	596	417
		24.6	50	120	200	284	199	426	298
	C50/60	49.2	100	120	200	353	247	529	370
		34.4	70	120	200	247	173	370	259
		24.6	50	120	200	176	123	265	185
14	C20/25	66.9	100	199	298	662	463	993	695
		46.9	70	140	210	463	324	695	487
		33.5	50	140	210	331	232	496	348
	C50/60	66.9	100	140	210	448	313	672	470
		46.9	70	140	210	313	219	470	329
		33.5	50	140	210	224	157	336	235
16	C20/25	87.4	100	227	340	757	530	1135	794
		61.2	70	160	240	530	371	794	556
		43.7	50	160	240	378	265	567	397
	C50/60	87.4	100	160	240	512	358	768	537
		61.2	70	160	240	358	251	537	376
		43.7	50	160	240	256	179	384	269
18	C20/25	110.6	100	255	383	851	596	1277	894
		77.4	70	180	270	596	417	894	626
		55.3	50	180	270	426	298	638	447
	C50/60	110.6	100	180	270	576	403	864	605
		77.4	70	180	270	403	282	605	423
		55.3	50	180	270	288	202	432	302

Rebar Size [mm]	Concrete Class	Design Resistance [kN]	Steel utilization [%]	Anchorage/Lap Length [mm]		lbd / l0,PIR [mm]
Rebar Size [mm]	Concrete Class	Design Resistance [kN]	Steel utilization [%]	lb,min	l0,min	lbd (α2=1)	lbd (α2=0.7)	l0,PIR (α2=1)	l0,PIR (α2=0.7)
20	C20/25	136.6	100	284	426	946	662	1418	993
		95.6	70	200	300	662	463	993	695
		68.3	50	200	300	473	331	709	496
	C50/60	136.6	100	200	300	640	448	960	672
		95.6	70	200	300	448	313	672	470
		68.3	50	200	300	320	224	480	336
22	C20/25	165.3	100	312	468	1040	728	1560	1092
		115.7	70	220	330	728	510	1092	765
		82.6	50	220	330	520	364	780	546
	C50/60	165.3	100	220	330	704	493	1056	739
		115.7	70	220	330	493	345	739	517
		82.6	50	220	330	352	246	528	369
24	C20/25	196.7	100	340	511	1135	794	1702	1192
		137.7	70	240	360	794	556	1192	834
		98.3	50	240	360	567	397	851	596
	C50/60	196.7	100	240	360	768	537	1151	806
		137.7	70	240	360	537	376	806	564
		98.3	50	240	360	384	269	576	403
25	C20/25	213.4	100	355	532	1182	827	1773	1241
		149.4	70	250	375	827	579	1241	869
		106.7	50	250	375	591	414	887	621
	C50/60	213.4	100	250	375	800	560	1199	840
		149.4	70	250	375	560	392	840	588
		106.7	50	250	375	400	280	600	420
26	C20/25	230.8	100	369	553	1229	861	1844	1291
		161.6	70	260	390	861	602	1291	904
		115.4	50	260	390	615	430	922	645
	C50/60	230.8	100	314	471	1047	733	1571	1100
		161.6	70	260	390	733	513	1100	770
		115.4	50	260	390	524	367	785	550
28	C20/25	267.7	1	100	397	596	1324	927	1986	1390
		187.4	70	280	420	927	649	1390	973
		133.9	50	280	420	662	463	993	695
	C50/60	267.7	100	338	508	1128	789	1692	1184
		187.4	70	280	420	789	553	1184	829
		133.9	50	280	420	564	395	846	592

Rebar Size [mm]	Concrete Class	Design Resistance [kN]	Steel utilization [%]	Anchorage/Lap Length [mm]		lbd / l0,PIR [mm]
Rebar Size [mm]	Concrete Class	Design Resistance [kN]	Steel utilization [%]	lb,min	l0,min	lbd (α2=1)	lbd (α2=0.7)	l0,PIR (α2=1)	l0,PIR (α2=0.7)
30	C20/25	307.3	100	426	638	1418	993	2128	1489
		215.1	70	300	450	993	695	1489	1043
		153.7	50	300	450	709	496	1064	745
	C50/60	307.3	100	363	544	1208	846	1813	1269
		215.1	70	300	450	846	592	1269	888
		153.7	50	300	450	604	423	906	634
32	C20/25	349.7	100	454	681	1513	1059	2270	1589
		244.8	70	320	480	1059	741	1589	1112
		174.8	50	320	480	757	530	1135	794
	C50/60	349.7	100	387	580	1289	902	1933	1353
		244.8	70	320	480	902	632	1353	947
		174.8	50	320	480	644	451	967	677

Seismic Loading

Based on ETA-15/0297. Seismic design according to EN 1998-1.

Data Applicability:

According to EN 1992-1-1 for good bond conditions. For all other bond conditions, multiply the values by 0.7.
Applies to Hammer drilling, Hammer drilling with Hilti hollow drill bit (TE-CD, TE-YD), and Compressed air drilling.
Design values of the bond strength for a working life of 50 Years.

For detailed technical information, refer to the Concrete-to-Concrete connections Handbook. For specific design cases, refer to PROFIS Engineering.

Design Bond Strength (fbd,PIR,seis) for Seismic Conditions

Values in N/mm² for good bond conditions for above methods of drilling techniques according to mortar IFU & ETA-15/0297.

Rebar Size [mm]	Concrete class
C16/20	C20/25	C25/30	C30/37	C35/45	C40/50	C45/55	C50/60
φ 10	1.6	1.6	1.6	1.6	1.6	1.6	1.6	1.6
φ 12 to φ 16	2.0	2.3	2.7	2.7	2.7	2.7	2.7	2.7
φ 18 to φ 30	2.0	2.3	2.3	2.3	2.3	2.3	2.3	2.3
φ 32	2.0	2.0	2.0	2.0	2.0	2.0	2.0	2.0

Fire Resistance

Based on ETA-17/0297 for working life of 50 years.

For evidence under fire exposure, the anchorage length shall be calculated according to EN 1992-1-1:2004+AC:2010 Equation 8.3 using the temperature-dependent bond resistance (fbd,fi).

Temperature Reduction Factor (kfi(θ))

For concrete class C20/25 for good bond conditions.

Graph showing the Reduction factor (k) versus Temperature (θ) [°C]. The formula provided is kfi(θ) = 1.762 * e^(-0.0171 * θ) for θ ≤ 216.2°C, and kfi(θ) = 0.0 for θ > 216.2°C. An example for C20/25 is indicated.

The design value of the bond strength (fbd,fi) under fire exposure is calculated by the following equation:

fbd,fi = kfi(θ) * fbd,PIR / γc * 1/γM,fi

Where:

fbd,fi: Design value of the bond resistance in case of fire in N/mm².
θ: Temperature in °C in the mortar layer.
kfi(θ): Reduction factor under fire exposure.
fbd,PIR: Design value of the bond resistance in N/mm² in cold condition considering concrete classes, rebar diameter, drilling method, and bond conditions according to EN 1992-1-1.
γc: Partial safety factor according to EN 1992-1-1.
γM,fi: Partial safety factor according to EN 1992-1-2.

Bond Strength (fbd,fi) for Fire Design

Values in N/mm² for fire design for concrete classes C12/15 to C50/60.

Rebar Temperature	Concrete class	fbd,fi [N/mm²]
	C12/15	C20/25	C50/60
50 °C	2.40	2.61	-
100 °C	-	1.1	-
150 °C	-	0.47	-
200 °C	-	0.20	-
216,2°C (max)	-	0.15	-

Setting Information

Installation Temperature Range

-5°C to +40°C

Service Temperature Range

Hilti HIT-HY 170 injection mortar may be applied in the temperature ranges given below. An elevated base material temperature may lead to a reduction of the design bond resistance.

Temperature range	Base material temperature	Maximum long term base material temperature	Maximum short term base material temperature
Temperature range I	-40 °C to +80 °C	+50 °C	+80 °C

Maximum short term base material temperature: Short-term elevated base material temperatures occur over brief intervals, e.g., as a result of diurnal cycling.

Maximum long term base material temperature: Long-term elevated base material temperatures are roughly constant over significant periods of time.

Curing and Working Time

Temperature of the base material T	Maximum working time (twork)	Minimum curing time (tcure)
-5 °C to 0 °C	10 min	12 h
> 0 °C to 5 °C	10 min	5 h
>5 °C to 10 °C	8 min	2.5 h
>10 °C to 20 °C	5 min	1.5 h
>20 °C to 30 °C	3 min	45 min
>30 °C to 40 °C	2 min	30 min

a) The curing time data are valid for dry base material only. In wet base material, the curing times must be doubled.

b) The minimum temperature of the injection mortar Hilti HIT-HY 170 during installation is + 5 °C.

Dispensers and Corresponding Maximum Embedment Depth (lv,max)

Rebar	Dispenser (HDM 330, HDM 500, HDE 500)
	T°C -5 °C to 40 °C	T°C 5 °C to 25 °C
φ8 to φ16	1000 mm	1250 mm
φ18 to φ25	700 mm	1000 mm
φ26 to φ32	600 mm	750 mm

Drilling and Installation Equipment

For detailed setting information on installation, see instructions for use provided with the product.

Equipment Type	Details
Rotary Hammers (Corded and Cordless)	TE 2 - TE 70
Dispenser	HDE, HDM
Other Tools	Blow out pump, Compressed air gun Set of cleaning brushes and other accessories Hammer drill bit: TE-CX, TE-YX, TE-C, TE-Y Hollow drill bit: TE-CD, TE-YD Piston plug and HIT-VL Extension hose

Minimum Concrete Cover (Cmin)

Minimum concrete cover Cmin of the post-installed rebar.

Drilling method	Bar diameter [mm]	Minimum concrete cover Cmin [mm]
Drilling method	Bar diameter [mm]	Without drilling aid	With drilling aid
Hammer drilling (HD) and (HDB)	φ < 25	30 + 0.06 * lv ≥ 2	30 + 0.02 * lv ≥ 2
	φ ≥ 25	40 + 0.06 * lv ≥ 2	40 + 0.02 * lv ≥ 2
Compressed air drilling (CA)	φ < 25	50 + 0.08 * lv	50 + 0.02 * lv
	φ ≥ 25	60 + 0.08 * lv ≥ 2	60 + 0.02 * lv ≥ 2

The minimum concrete cover is according to EN 1992-1-1. The same minimum concrete covers apply for rebar elements in the case of seismic loading, i.e. Cmin,seis = 2 * Φ.

Definitions:

c: Concrete cover of post-installed rebar
c1: Concrete cover at end-face of existing rebar
Cmin: Minimum concrete cover
Φ: Diameter of reinforcement bar
l0: Lap length according to EN 1992-1-1 for static loading and according to EN 1998-1, section 5.6.3 for seismic action
lv: Effective embedment depth ≥ l0 + c1
do: Nominal drill bit diameter, see IFU section for more details

Diagram illustrating concrete cover (c, c1), rebar diameter (Φ), lap length (l0), and embedment depth (lv). It also shows the condition for increasing lap length if the clear distance between lapped bars exceeds 4Φ or 50 mm, by the difference between the clear bar distance and the smaller of 4Φ or 50 mm.

	Hilti HIT-HY 170 Injection Mortar: Technical Datasheet for Concrete-to-Concrete Rebar Applications Comprehensive technical datasheet for Hilti HIT-HY 170 injection mortar, detailing its properties, benefits, load conditions, installation guidelines, approvals, and performance data for rebar applications in concrete, including static, seismic, and fire resistance.
	Hilti HIT-HY 170 Injection Mortar: ETA Technical Assessment for Rebar Connections Official European Technical Assessment (ETA-15/0297) for Hilti HIT-HY 170 injection mortar. Details performance, installation, and use for post-installed rebar connections in concrete.
	Hilti HIT-HY 170 Injection Mortar: European Technical Assessment for Rebar Connections Official European Technical Assessment (ETA-15/0297) for the Hilti HIT-HY 170 injection mortar system, detailing specifications, performance, and intended use for post-installed rebar connections in concrete structures.
	Hilti HIT Bewehrungsanschluss Montageanleitung: Installation und Anwendung Umfassende Montageanleitung für Hilti HIT Bewehrungsanschlusssysteme, inklusive HIT-HY 200-R/A, HIT-HY 170, HIT-CT 1 und HIT-RE 500 v3. Erfahren Sie mehr über Bohrlochvorbereitung, Reinigung, Mörtelinjektion und sichere Installation.
	Hilti HCC-K Shear Connector: Technical Datasheet for Concrete-to-Concrete Applications Discover the Hilti HCC-K Shear Connector, a key component for concrete-to-concrete composite applications, designed for use with HIT-RE 500 V4 and HIT-HY 200-A/R V3 injection mortars. This technical datasheet provides essential information on applications, benefits, dimensions, and design resistance for structural reinforcement in bridges, tunnels, and high-rise buildings.
	Hilti HIT-HY 170 : Déclaration de Performances pour Systèmes d'Ancrage Consultez la déclaration de performances du système d'ancrage par injection Hilti HIT-HY 170. Ce document technique détaille les performances de résistance mécanique, stabilité, comportement sismique et sécurité au feu pour les applications de construction.
	Hilti HIT-HY 200 Injection Mortar: Technical Data and Installation Guide Discover the Hilti HIT-HY 200 injection mortar system, featuring SafeSet technology. This guide provides comprehensive technical specifications, load capacities, installation details, and approvals for various concrete applications and seismic conditions.
	Hilti HIT-HY 200-A V3 & HIT-HY 200-R V3 Injection System: European Technical Assessment ETA-25/0534 European Technical Assessment (ETA-25/0534) for Hilti HIT-HY 200-A V3 and HIT-HY 200-R V3 injection systems. Details performance, specifications, and intended use for rebar connections in concrete, covering mechanical resistance, stability, and fire safety.

Injection Mortar System

Benefits

Base Material

Load Conditions

Installation Conditions

Other Information

Approvals, Certificates, and Instructions for Use

Instructions for Use (IFU)

Link to Hilti Webpage

Mechanical Properties and Dimensions of Rebar

Material Quality

Static and Quasi-Static Loading

Design Bond Strength (fbd,PIR)

Minimum Anchorage Length and Minimum Lap Length

Typical Examples

Amplification Factor (αlb)

Anchorage and Lap Length Data

Definitions:

Detailed Anchorage and Lap Length Tables

Seismic Loading

Design Bond Strength (fbd,PIR,seis) for Seismic Conditions

Fire Resistance

Temperature Reduction Factor (kfi(θ))

Bond Strength (fbd,fi) for Fire Design

Setting Information

Installation Temperature Range

Service Temperature Range

Curing and Working Time

Dispensers and Corresponding Maximum Embedment Depth (lv,max)

Drilling and Installation Equipment

Minimum Concrete Cover (Cmin)

Definitions:

Related Documents